chore(deps): update dependency polyfill to 9.12.0

[thomhurst]

This PR contains the following updates:

Package	Type	Update	Change
Polyfill	nuget	minor	9.11.0 → 9.12.0

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Release Notes

SimonCropp/Polyfill (Polyfill)

v9.12.0

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]

Code Review: Dependency Update (Polyfill 9.11.0 → 9.12.0)

This is a straightforward Renovate Bot-generated dependency bump for the Polyfill package from version 9.11.0 to 9.12.0.

Change Summary

• File changed: Directory.Packages.props (1 addition, 1 deletion)
• Nature: Minor version bump of a development/polyfill dependency

Assessment

This is a clean, minimal change — a single line update in the centralized package management file (Directory.Packages.props). The use of Central Package Management (CPM) is the right pattern here, ensuring the version is updated in one place and propagated consistently across all consuming projects.

The Polyfill package (by SimonCropp) provides source-level polyfills for newer .NET APIs, which aligns well with TUnit's multi-targeting strategy (net8.0;net9.0;net10.0). A minor version bump from 9.11.0 to 9.12.0 is low-risk and likely adds new polyfilled APIs or fixes, with no breaking changes expected per semantic versioning.

No Concerns

• The diff is exactly what it should be for a dependency update — nothing extraneous
• CPM is being used correctly; no individual .csproj files need updating
• Automerge is configured for this bot, which is appropriate for minor dependency bumps

Approved. Safe to merge.