refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -9,12 +9,12 @@
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.5" />
     <PackageVersion Include="NUnit" Version="4.4.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="6.1.0" />
-    <PackageVersion Include="Polyfill" Version="9.8.1" />
+    <PackageVersion Include="Polyfill" Version="9.9.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.172" />
     <PackageVersion Include="System.IO.Hashing" Version="10.0.3" />
-    <PackageVersion Include="Verify" Version="31.12.5" />
+    <PackageVersion Include="Verify" Version="31.13.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageVersion Include="Verify.Nunit" Version="31.12.5" />
+    <PackageVersion Include="Verify.Nunit" Version="31.13.0" />
     <PackageVersion Include="Argon" Version="0.33.5" />
     <PackageVersion Include="DiffEngine" Version="18.4.1" />
     <PackageVersion Include="EmptyFiles" Version="8.17.2" />