chore(deps): update dependency polyfill to 9.3.4

[thomhurst]

This PR contains the following updates:

Package	Type	Update	Change
Polyfill	nuget	patch	9.3.2 -> 9.3.4

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Release Notes

SimonCropp/Polyfill (Polyfill)

v9.3.4

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]

PR Review: Polyfill Dependency Update (9.3.2 → 9.3.4)

✅ Overall Assessment

This is a straightforward patch-level dependency update that appears safe to merge. The change is minimal, focused, and follows proper semantic versioning practices.

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📋 Review Findings

✅ Code Quality

• Minimal scope: Single-line change updating version number
• Proper location: Correctly updates TUnit.Core.targets which manages auto-included Polyfill dependency
• Clean diff: No extraneous changes or modifications

⚠️ Potential Issue: Version Discrepancy

There's a version mismatch in the repository:

• TUnit.Core/TUnit.Core.targets (this PR): 9.3.2 → 9.3.4 ✅
• Directory.Packages.props (line 62): 9.3.1 (unchanged)

Recommendation: Consider updating Directory.Packages.props to 9.3.4 in a follow-up to maintain consistency, unless the versions are intentionally different for internal vs. external projects.

✅ Architecture Compliance

The update correctly targets the _TUnitPolyfillVersion property that is:

• Used for non-CPM projects via Version attribute
• Used for CPM projects via VersionOverride attribute
• Only applied when targeting .NET Standard 2.0/2.1 or .NET Framework

This follows TUnit's dual-mode CPM support pattern.

✅ Security

• Polyfill is a legitimate package by Simon Cropp
• Patch version update (9.3.2 → 9.3.4) has low risk
• Package usage is compile-time only (PrivateAssets=all, excludes runtime)

✅ Performance

• No performance impact (compile-time polyfill only)
• No runtime dependencies added

✅ Test Coverage

• No test changes required (dependency version update only)
• Existing tests should validate compatibility

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🔍 Additional Considerations

1. Renovate Bot Configuration: The PR shows automerge is enabled. Ensure CI passes before auto-merging.

2. Release Notes: The linked release notes don't show specific changes between 9.3.2 and 9.3.4. Consider checking the Polyfill changelog to understand what was fixed in the patch.

3. No Breaking Changes: Since this is a patch version, no breaking changes are expected per semantic versioning.

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✅ Approval Recommendation

APPROVED - This PR is safe to merge once CI passes.

Suggested Follow-up: Update Directory.Packages.props line 62 from version 9.3.1 to 9.3.4 to maintain consistency.

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Review conducted per TUnit's CLAUDE.md guidelines

[Copilot]

Pull request overview

This PR updates the Polyfill dependency from version 9.3.2 to 9.3.4 for NuGet package consumers. This is a patch-level dependency update that maintains backward compatibility.