chore(deps): update dependency polyfill to 9.7.6

[thomhurst]

This PR contains the following updates:

Package	Type	Update	Change
Polyfill	nuget	patch	9.7.5 → 9.7.6

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Release Notes

SimonCropp/Polyfill (Polyfill)

v9.7.6

Compare Source

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Configuration

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This PR has been generated by Renovate Bot.

[thomhurst]

Summary

Updates the Polyfill package from 9.7.5 to 9.7.6 (patch version).

Critical Issues

None found ✅

TUnit Rules Assessment

• Dual-Mode: ❌ Not applicable (dependency update only)
• Snapshot Testing: ❌ Not applicable (no source generator or API changes)
• No VSTest: ✅ N/A (Polyfill is a compatibility library)
• Performance: ✅ N/A (compile-time dependency)
• AOT Compatible: ✅ Maintained (uses PolyUseEmbeddedAttribute=true)

Analysis

This is a low-risk patch update to a widely-used compatibility library across all TUnit projects. The Polyfill package provides modern .NET API polyfills for older target frameworks and is configured to use embedded attributes for AOT compatibility.

The change:

• Only modifies Directory.Packages.props
• Updates a single version number
• Follows semantic versioning (patch = backward compatible)
• Is auto-generated by Renovate Bot with automerge enabled

Verdict

✅ APPROVE - No critical issues, safe dependency patch update