chore(deps): update docker/setup-docker-action action to v4.6.0

[thomhurst]

This PR contains the following updates:

Package	Type	Update	Change
docker/setup-docker-action	action	minor	v4.5.0 -> v4.6.0

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Release Notes

docker/setup-docker-action (docker/setup-docker-action)

v4.6.0

Compare Source

• Bump @​docker/actions-toolkit from 0.65.0 to 0.68.0 in #​189

Full Changelog: docker/setup-docker-action@v4.5.0...v4.6.0

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Configuration

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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: Docker Setup Action Update

Review Checklist:

• Read the changed workflow file
• Analyze the dependency update impact
• Review for code quality and best practices
• Check for potential bugs or issues
• Evaluate performance considerations
• Assess security concerns
• Verify test coverage implications

Review Summary ✅

This is a safe and recommended dependency update with no concerns.

Code Quality & Best Practices ✅

• Clean Change: Single line update following semantic versioning
• Proper Pinning: Uses exact version tag (v4.6.0) rather than floating tags
• Conditional Usage: Correctly limited to ubuntu-latest runners where Docker is needed
• Workflow Structure: Well-organized pipeline with appropriate step ordering

Security Assessment ✅

• Trusted Source: docker/setup-docker-action is an official Docker organization action
• Minor Version: v4.5.0 → v4.6.0 is a minor bump with low risk profile
• No New Permissions: Update doesn't introduce additional workflow permissions
• Version Pinning: Using exact version tags provides supply chain protection

Performance Considerations ✅

• Minimal Impact: Action is only used for Docker setup, not in critical test execution path
• Dependency Updates: v4.6.0 includes @docker/actions-toolkit 0.65.0 → 0.68.0 (likely performance/stability improvements)
• No Breaking Changes: Minor version indicates backward compatibility

Potential Issues Assessment ✅

• Low Risk: Minor version updates rarely introduce breaking changes
• Backward Compatible: Docker action maintains stable API across minor versions
• Limited Scope: Only affects Ubuntu test runners, other OS matrix entries unaffected
• Fallback Available: If issues arise, easy to revert single line change

Test Coverage Impact ✅

• No Test Changes Needed: Docker setup is infrastructure-level, doesn't affect test logic
• Pipeline Coverage: Existing CI pipeline will validate the update across matrix builds
• Integration Testing: TUnit's comprehensive test suite will exercise Docker-dependent functionality

Recommendations

1. Approve and Merge: This is a routine maintenance update with no red flags
2. Monitor CI: Watch for any unexpected failures in Ubuntu test runs post-merge
3. Auto-merge Safe: Renovate's auto-merge setting is appropriate for this type of update

Technical Details

• File Changed: .github/workflows/dotnet.yml:69
• Scope: Ubuntu-only Docker setup step
• Impact: Infrastructure maintenance, no functional changes expected
• Rollback Strategy: Simple revert if issues detected

This dependency update follows best practices and poses minimal risk to the project.

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