Bump Polyfill from 4.8.0 to 4.9.0 in /src

Bumps [Polyfill](https://github.com/SimonCropp/Polyfill) from 4.8.0 to 4.9.0.
- [Commits](https://github.com/SimonCropp/Polyfill/commits/4.9.0)

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

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

src/Verify.FakeItEasy/Verify.FakeItEasy.csproj

@@ -7,6 +7,6 @@
     <PackageReference Include="Verify" Version="24.1.0" />
     <PackageReference Include="ProjectDefaults" Version="1.0.126" PrivateAssets="all" />
     <PackageReference Include="FakeItEasy" Version="8.2.0" />
-    <PackageReference Include="Polyfill" Version="4.8.0" PrivateAssets="all" />
+    <PackageReference Include="Polyfill" Version="4.9.0" PrivateAssets="all" />
   </ItemGroup>
 </Project>