refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -9,7 +9,7 @@
     <PackageVersion Include="OpenTelemetry" Version="1.15.0" />
     <PackageVersion Include="OpenTelemetry.Exporter.InMemory" Version="1.15.0" />
     <PackageVersion Include="Microsoft.Extensions.Logging" Version="10.0.3" />
-    <PackageVersion Include="Polyfill" Version="9.10.0" />
+    <PackageVersion Include="Polyfill" Version="9.11.0" />
     <PackageVersion Include="Verify" Version="31.13.2" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.XunitV3" Version="31.13.2" />