refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -6,11 +6,11 @@
   <ItemGroup>
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="27.0.2" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
-    <PackageVersion Include="Polyfill" Version="7.18.0" />
+    <PackageVersion Include="Polyfill" Version="7.19.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.147" />
-    <PackageVersion Include="Verify" Version="28.12.1" />
+    <PackageVersion Include="Verify" Version="28.13.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageVersion Include="Verify.XunitV3" Version="28.12.1" />
+    <PackageVersion Include="Verify.XunitV3" Version="28.13.0" />
     <PackageVersion Include="WolverineFx" Version="3.9.1" />
     <PackageVersion Include="xunit.v3" Version="1.1.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.2" />