chore(deps): update actions/cache action to v5.0.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	patch	v5.0.4 → v5.0.5

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Release Notes

actions/cache (actions/cache)

v5.0.5

Compare Source

What's Changed

• Update ts-http-runtime dependency by @​yacaovsnc in #​1747

Full Changelog: actions/cache@v5...v5.0.5

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Configuration

📅 Schedule: (UTC)

• Branch creation
  • At 12:00 AM through 04:59 AM and 10:00 PM through 11:59 PM, Monday through Friday (* 0-4,22-23 * * 1-5)
  • Only on Sunday and Saturday (* * * * 0,6)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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[github-actions]

Renovate PR Review Results

⚖️ Safety Assessment: ✅ Safe

🔍 Release Content Analysis

Version Change: actions/cache v5.0.4 → v5.0.5 (patch release)

Key Changes:

• Updated @typespec/ts-http-runtime dependency to version 0.3.5
• Rebuilt distribution files with updated dependency
• Applied licensing updates

Bug Fix Addressed:

• Fixed proxy server compatibility issue where some proxy servers were blocking HTTPS CONNECT calls that included request headers
• The fix ensures request headers are no longer forwarded to the proxy server during HTTPS CONNECT tunnel establishment
• Headers on proxied HTTP(S) requests sent through established tunnels remain unchanged

Breaking Changes: None

Security Issues: No security vulnerabilities addressed. This is purely a bug fix for proxy compatibility.

🎯 Impact Scope Investigation

Usage Locations:

• .github/actions/setup/action.yml:10 - Composite action used for environment setup

Indirect Usage (via .github/actions/setup):

• .github/workflows/ci.yml - Test, Build, and Lint jobs (lines 26, 39, 53)
• .github/workflows/update-demo.yml - Demo update workflow (line 20)
• .github/workflows/update-docs.yml - Documentation update workflow (line 26)

Cache Configuration:

path: |
  ~/.cache/go-build
  ~/go/pkg/mod
key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
restore-keys: |
  ${{ runner.os }}-go-

Impact Assessment:

• No API changes to the actions/cache action interface
• All existing parameters (path, key, restore-keys) remain compatible
• The update only affects the internal HTTP runtime dependency
• No modifications required to workflow files or action configurations

Dependency Impact:

• No impact on other GitHub Actions or project dependencies
• The change is isolated to the actions/cache action's internal implementation

💡 Recommended Actions

Immediate Actions:

• ✅ Merge with confidence - This is a safe, non-breaking patch release
• No code modifications required
• No configuration changes needed

Post-Merge Validation:

• Monitor the next CI workflow runs to ensure cache operations work as expected
• Particularly verify workflows succeed in environments using proxy servers (if applicable)

Benefits of Merging:

• Improved proxy server compatibility for users behind corporate firewalls
• More robust HTTPS tunnel establishment behavior
• Maintains all existing functionality while fixing edge cases

🔗 Reference Links

• Release Notes v5.0.5
• Pull Request #1747
• Comparison v5.0.4...v5.0.5

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