refs or cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -8,7 +8,7 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageVersion Include="NUnit" Version="4.4.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="5.1.0" />
-    <PackageVersion Include="Polyfill" Version="8.7.4" />
+    <PackageVersion Include="Polyfill" Version="8.8.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.157" />
     <PackageVersion Include="Sylvan.Data.Csv" Version="1.4.2" />
     <PackageVersion Include="Sylvan.Data.Excel" Version="0.4.29" />