refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -6,11 +6,11 @@
   <ItemGroup>
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="28.0.0-beta.2" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
-    <PackageVersion Include="Polyfill" Version="8.8.1" />
+    <PackageVersion Include="Polyfill" Version="8.9.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.158" />
-    <PackageVersion Include="Verify" Version="30.13.0" />
+    <PackageVersion Include="Verify" Version="30.17.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageVersion Include="Verify.XunitV3" Version="30.13.0" />
+    <PackageVersion Include="Verify.XunitV3" Version="30.17.0" />
     <PackageVersion Include="WolverineFx" Version="4.12.0" />
     <PackageVersion Include="xunit.v3" Version="3.0.1" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.4" />