refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -10,7 +10,7 @@
     <PackageVersion Include="Fody" Version="6.9.3" />
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="28.0.0-beta.7" />
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.3" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageVersion Include="Polyfill" Version="9.0.1" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.162" />
     <PackageVersion Include="Resourcer.Fody" Version="1.8.1" />
@@ -26,7 +26,7 @@
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.ImageMagick" Version="3.8.0" />
     <PackageVersion Include="Verify.WinForms" Version="4.0.0" />
-    <PackageVersion Include="Verify.Xunit" Version="31.5.3" />
+    <PackageVersion Include="Verify.Xunit" Version="31.6.0" />
     <PackageVersion Include="Xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
     <PackageVersion Include="XunitContext" Version="3.3.2" />