Bump Polyfill from 9.8.1 to 9.9.0

---
updated-dependencies:
- dependency-name: Polyfill
  dependency-version: 9.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -11,7 +11,7 @@
     <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.3.2" />
     <PackageVersion Include="MSTest.TestAdapter" Version="4.0.2" />
     <PackageVersion Include="MSTest.TestFramework" Version="4.0.2" />
-    <PackageVersion Include="Polyfill" Version="9.8.1" />
+    <PackageVersion Include="Polyfill" Version="9.9.0" />
     <PackageVersion Include="TestableIO.System.IO.Abstractions" Version="22.1.0" />
     <PackageVersion Include="TestableIO.System.IO.Abstractions.TestingHelpers" Version="22.1.0" />
     <PackageVersion Include="TestableIO.System.IO.Abstractions.Wrappers" Version="22.1.0" />