Bump Polyfill from 2.1.0 to 2.2.0 in /src (#723)

Bumps [Polyfill](https://github.com/SimonCropp/Polyfill) from 2.1.0 to 2.2.0.
- [Commits](SimonCropp/Polyfill@2.1.0...2.2.0)

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

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src/Verify.WinForms/Verify.WinForms.csproj

@@ -5,7 +5,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Argon" Version="0.15.0" />
-    <PackageReference Include="Polyfill" Version="2.1.0" PrivateAssets="all" />
+    <PackageReference Include="Polyfill" Version="2.2.0" PrivateAssets="all" />
     <PackageReference Include="Verify" Version="23.1.0" />
     <PackageReference Include="ProjectDefaults" Version="1.0.109" PrivateAssets="all" />
   </ItemGroup>