chore(deps): update dependency polyfill to 8.9.1

[thomhurst]

This PR contains the following updates:

Package	Type	Update	Change
Polyfill	nuget	minor	8.7.4 → 8.9.1

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Release Notes

SimonCropp/Polyfill (Polyfill)

v8.9.1

Compare Source

v8.9.0

Compare Source

v8.8.1

Compare Source

v8.8.0

Compare Source

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Configuration

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This PR has been generated by Mend Renovate.

[greptile-apps]

Greptile Summary

This PR updates the project's build-time Polyfill dependency.

• Bumps Polyfill from 8.7.4 to 8.9.1.
• Keeps the existing private asset and included asset settings.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

Important Files Changed

Filename	Overview
EnumerableAsyncProcessor/EnumerableAsyncProcessor.csproj	Updates Polyfill to 8.9.1 without changing package asset configuration.

_{Reviews (1): Last reviewed commit: "chore(deps): update dependency polyfill ..." | Re-trigger Greptile}

[thomhurst]

Closing as superseded by #330, which upgraded Polyfill to 11.0.1. Rebasing this PR would downgrade the dependency to 8.9.1.