chore(deps): bump Polyfill from 5.3.0 to 5.4.0 (#160)

Author: dependabot[bot]

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' " />