refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -10,7 +10,7 @@
     <PackageVersion Include="NUnit3TestAdapter" Version="6.2.0" />
     <PackageVersion Include="Polyfill" Version="10.10.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.174" />
-    <PackageVersion Include="ProjectFiles" Version="1.3.0" />
+    <PackageVersion Include="ProjectFiles" Version="1.3.1" />
     <PackageVersion Include="System.IO.Compression" Version="4.3.0" />
     <PackageVersion Include="System.IO.Hashing" Version="10.0.9" />
     <PackageVersion Include="System.Memory" Version="4.6.3" />