refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -8,7 +8,7 @@
     <PackageVersion Include="DeterministicIoPackaging" Version="0.13.0" />
     <PackageVersion Include="DocumentFormat.OpenXml" Version="3.3.0" />
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="28.0.0-beta.7" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageVersion Include="Microsoft.Office.Interop.Excel" Version="16.0.18925.20022" />
     <PackageVersion Include="NUnit" Version="4.4.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="5.2.0" />