Update html-proofer requirement from ~> 5.1.0 to ~> 5.2.0 (#1165)

Updates the requirements on
[html-proofer](https://github.com/gjtorikian/html-proofer) to permit the
latest version.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/gjtorikian/html-proofer/releases">html-proofer's
releases</a>.</em></p>
<blockquote>
<h2>v5.2.0</h2>
<h2>What's Changed</h2>
<ul>
<li>[skip test] Release v5.1.1 by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>[bot]
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/862">gjtorikian/html-proofer#862</a></li>
<li>Bump actions/checkout from 5 to 6 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/863">gjtorikian/html-proofer#863</a></li>
<li>Add JSON argument examples by <a
href="https://github.com/asbjornu"><code>@​asbjornu</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/864">gjtorikian/html-proofer#864</a></li>
<li>CI/CD caching requires HTMLProofer caching by <a
href="https://github.com/asbjornu"><code>@​asbjornu</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/865">gjtorikian/html-proofer#865</a></li>
<li>Simplify README by <a
href="https://github.com/gjtorikian"><code>@​gjtorikian</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/869">gjtorikian/html-proofer#869</a></li>
<li>Bump the bundler-dependencies group with 2 updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/871">gjtorikian/html-proofer#871</a></li>
<li>Allows access to the full Nokogiri node and all element attributes
when processing failures by <a
href="https://github.com/gjtorikian"><code>@​gjtorikian</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/870">gjtorikian/html-proofer#870</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/gjtorikian/html-proofer/compare/v5.1.1...v5.2.0">https://github.com/gjtorikian/html-proofer/compare/v5.1.1...v5.2.0</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/gjtorikian/html-proofer/blob/main/CHANGELOG.md">html-proofer's
changelog</a>.</em></p>
<blockquote>
<h1>[v5.2.0] - 07-01-2026</h1>
<h2>What's Changed</h2>
<ul>
<li>[skip test] Release v5.1.1 by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>[bot]
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/862">gjtorikian/html-proofer#862</a></li>
<li>Bump actions/checkout from 5 to 6 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/863">gjtorikian/html-proofer#863</a></li>
<li>Add JSON argument examples by <a
href="https://github.com/asbjornu"><code>@​asbjornu</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/864">gjtorikian/html-proofer#864</a></li>
<li>CI/CD caching requires HTMLProofer caching by <a
href="https://github.com/asbjornu"><code>@​asbjornu</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/865">gjtorikian/html-proofer#865</a></li>
<li>Simplify README by <a
href="https://github.com/gjtorikian"><code>@​gjtorikian</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/869">gjtorikian/html-proofer#869</a></li>
<li>Bump the bundler-dependencies group with 2 updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/871">gjtorikian/html-proofer#871</a></li>
<li>Allows access to the full Nokogiri node and all element attributes
when processing failures by <a
href="https://github.com/gjtorikian"><code>@​gjtorikian</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/870">gjtorikian/html-proofer#870</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/gjtorikian/html-proofer/compare/v5.1.1...v5.2.0">https://github.com/gjtorikian/html-proofer/compare/v5.1.1...v5.2.0</a></p>
<h1>[v5.1.1] - 17-11-2025</h1>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/gjtorikian/html-proofer/compare/v5.1.0...v5.1.1">https://github.com/gjtorikian/html-proofer/compare/v5.1.0...v5.1.1</a></p>
<h1>[v5.1.0] - 03-11-2025</h1>
<h2>What's Changed</h2>
<ul>
<li>Bump actions/checkout from 4 to 5 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/857">gjtorikian/html-proofer#857</a></li>
<li>Add to Gemfile by <a
href="https://github.com/denisdefreyne"><code>@​denisdefreyne</code></a>
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/858">gjtorikian/html-proofer#858</a></li>
<li>Remove outdated real-world examples by <a
href="https://github.com/denisdefreyne"><code>@​denisdefreyne</code></a>
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/859">gjtorikian/html-proofer#859</a></li>
<li>Allow support for multiple directory index files by <a
href="https://github.com/denisdefreyne"><code>@​denisdefreyne</code></a>
in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/860">gjtorikian/html-proofer#860</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a
href="https://github.com/denisdefreyne"><code>@​denisdefreyne</code></a>
made their first contribution in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/858">gjtorikian/html-proofer#858</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/gjtorikian/html-proofer/compare/v5.0.10...v5.1.0">https://github.com/gjtorikian/html-proofer/compare/v5.0.10...v5.1.0</a></p>
<h1>[v5.0.10] - 21-02-2025</h1>
<h2>What's Changed</h2>
<ul>
<li>Fixup typhoeus arg usage in README by <a
href="https://github.com/gionn"><code>@​gionn</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/841">gjtorikian/html-proofer#841</a></li>
<li>Check utf8 relative anchors by <a
href="https://github.com/ahpook"><code>@​ahpook</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/842">gjtorikian/html-proofer#842</a></li>
<li>Fix variable assignment in index.php by <a
href="https://github.com/MakWigglz"><code>@​MakWigglz</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/845">gjtorikian/html-proofer#845</a></li>
<li>Correct README example by <a
href="https://github.com/gjtorikian"><code>@​gjtorikian</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/847">gjtorikian/html-proofer#847</a></li>
<li>Handle multiple srcsets when first is remote (fixes <a
href="https://redirect.github.com/gjtorikian/html-proofer/issues/850">#850</a>)
by <a href="https://github.com/paulroub"><code>@​paulroub</code></a> in
<a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/851">gjtorikian/html-proofer#851</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/gionn"><code>@​gionn</code></a> made
their first contribution in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/841">gjtorikian/html-proofer#841</a></li>
<li><a href="https://github.com/ahpook"><code>@​ahpook</code></a> made
their first contribution in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/842">gjtorikian/html-proofer#842</a></li>
<li><a href="https://github.com/MakWigglz"><code>@​MakWigglz</code></a>
made their first contribution in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/845">gjtorikian/html-proofer#845</a></li>
<li><a href="https://github.com/paulroub"><code>@​paulroub</code></a>
made their first contribution in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/851">gjtorikian/html-proofer#851</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/gjtorikian/html-proofer/compare/v5.0.9...v5.0.10">https://github.com/gjtorikian/html-proofer/compare/v5.0.9...v5.0.10</a></p>
<h1>[v5.0.9] - 07-05-2024</h1>
<h2>What's Changed</h2>
<ul>
<li>Bump actions/checkout from 3 to 4 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/805">gjtorikian/html-proofer#805</a></li>
</ul>
<ul>
<li>Bump actions/checkout from 3 to 4 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/805">gjtorikian/html-proofer#805</a></li>
<li>Improved performance be removing unnecessary regexp (<a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/820">gjtorikian/html-proofer#820</a>)</li>
<li>Improved color output <a
href="https://redirect.github.com/gjtorikian/html-proofer/pull/818">gjtorikian/html-proofer#818</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/df89ea2e62a6ba8bbf2b38c180fc1819cc2f4589"><code>df89ea2</code></a>
Merge pull request <a
href="https://redirect.github.com/gjtorikian/html-proofer/issues/870">#870</a>
from gjtorikian/more-failure-element-info</li>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/9b0f5aeffc69fd28d0e449039008ca758c5038ac"><code>9b0f5ae</code></a>
hide unnecessary warning</li>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/058312474b315769a35b465806cdfd6e44c35b46"><code>0583124</code></a>
:gem: bump to 5.2.0</li>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/06391d1cd779b08aac4ef85ca758b6bbe193df77"><code>06391d1</code></a>
Merge branch 'main' into more-failure-element-info</li>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/2bb1b7e0a73840a326175120ce9db13e57597093"><code>2bb1b7e</code></a>
update vcr</li>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/eb37c244d11f38d44d0775f44e593775f77615a2"><code>eb37c24</code></a>
[auto-lint]: Lint files</li>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/53a1ac70b9c7eb8b475e3aaf92219ecd64037b72"><code>53a1ac7</code></a>
work around new 429 error</li>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/cd974d09407c39e69947830fa556e339fb84c6fc"><code>cd974d0</code></a>
Merge pull request <a
href="https://redirect.github.com/gjtorikian/html-proofer/issues/871">#871</a>
from gjtorikian/dependabot/bundler/bundler-dependenci...</li>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/25501a65eee3143d4ea489708b547fbe8b13ab3d"><code>25501a6</code></a>
Bump the bundler-dependencies group with 2 updates</li>
<li><a
href="https://github.com/gjtorikian/html-proofer/commit/a2eceaafd43267441be51c350c50927d2cbedeb1"><code>a2eceaa</code></a>
Update workflows</li>
<li>Additional commits viewable in <a
href="https://github.com/gjtorikian/html-proofer/compare/v5.1.0...v5.2.0">compare
view</a></li>
</ul>
</details>
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Gemfile

@@ -2,4 +2,4 @@
 
 source 'https://rubygems.org'
 
-gem 'html-proofer', "~> 5.1.0", :require => false
+gem 'html-proofer', "~> 5.2.0", :require => false