chore(deps): update actions/download-artifact action to v6

[thomhurst]

This PR contains the following updates:

Package	Type	Update	Change
actions/download-artifact	action	major	v5 -> v6

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Release Notes

actions/download-artifact (actions/download-artifact)

v6

Compare Source

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, 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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• If you want to rebase/retry this PR, check this box

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This PR has been generated by Renovate Bot.

[claude]

Claude finished @thomhurst's task —— View job

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PR Review: Update actions/download-artifact to v6

Review Checklist:

• Analyze the workflow file changes
• Check for breaking changes in v6
• Review security and compatibility
• Provide comprehensive feedback

Analysis:

The change updates actions/download-artifact from v5 to v6 on line 71 of .github/workflows/speed-comparison.yml. This action downloads build artifacts from the build-test-artifacts job for use in the run-time-benchmarks job.

✅ Code Quality & Best Practices

• Clean change: The update is minimal and focused, changing only the version number
• Consistent versioning: The workflow properly pins to major versions (@v6) which is a GitHub Actions best practice
• Proper dependency management: Using Renovate Bot for automated dependency updates is excellent practice

✅ Compatibility Assessment

• No breaking changes: The current usage pattern with name and path parameters remains fully compatible in v6
• Backward compatible: Actions v6 maintains the same interface as v5 for the parameters used in this workflow
• Cross-platform support: No OS-specific changes needed for ubuntu-latest, windows-latest, or macos-latest

✅ Security Considerations

• Trusted source: actions/download-artifact is an official GitHub action maintained by GitHub
• Version pinning: Using @v6 (major version) provides automatic security patches while preventing breaking changes
• No credential exposure: The action doesn't require or expose sensitive credentials

✅ Performance Considerations

• Performance neutral: v6 maintains similar performance characteristics to v5
• No workflow impact: The artifact download process should work identically
• Retention consistency: Works with the existing retention-days: 1 setting from the upload step

✅ Test Coverage

• Existing coverage: The workflow itself serves as integration testing for the artifact download functionality
• Multi-platform testing: Tests across ubuntu-latest, windows-latest, and macos-latest
• Comprehensive test matrix: Covers multiple test classes (DataDrivenTests, AsyncTests, etc.)

🎯 Recommendation

APPROVE: This is a low-risk, maintenance update that:

• ✅ Has no breaking changes for current usage
• ✅ Maintains full backward compatibility
• ✅ Follows security best practices
• ✅ Is automatically tested through the existing workflow

The change is safe to merge and should be deployed with confidence.

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