Appease linter

The `lint-code` CI job failed for this reason:

    lib/solidus_dev_support/rake_tasks.rb:86:1: C: [Correctable]
    Layout/EmptyLinesAroundExceptionHandlingKeywords:
    Extra empty line detected before the rescue.
    (https://rubystyle.guide#empty-lines-around-bodies)

Author: benjaminwil

lib/solidus_dev_support/rake_tasks.rb

@@ -83,7 +83,6 @@ def install_changelog_task
         config.user = repo.owner
         config.project = repo.name
         config.future_release = "v#{ENV.fetch('UNRELEASED_VERSION') { gemspec.version }}"
-
       rescue Octokit::InvalidRepository
         warn <<~WARN
           It won't be possible to automatically generate the CHANGELOG for this extension because the