chore(deps): bump Polyfill from 5.3.0 to 5.4.0

Bumps [Polyfill](https://github.com/SimonCropp/Polyfill) from 5.3.0 to 5.4.0.
- [Commits](SimonCropp/Polyfill@5.3.0...5.4.0)

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

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

Directory.Packages.props

@@ -16,7 +16,7 @@
     <PackageVersion Include="coverlet.msbuild" Version="6.0.2" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
     <PackageVersion Include="NetEvolve.Extensions.XUnit" Version="2.2.12" />
-    <PackageVersion Include="Polyfill" Version="5.3.0" />
+    <PackageVersion Include="Polyfill" Version="5.4.0" />
     <PackageVersion Include="xunit" Version="2.8.1" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.1" />
     <PackageVersion Update="xunit.runner.visualstudio" Version="2.8.1" Condition=" '$(TargetFramework)' == 'net5.0' Or '$(TargetFramework)' == 'netcoreapp3.1' " />