refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -10,9 +10,9 @@
     <PackageVersion Include="NUnit3TestAdapter" Version="6.2.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.172" />
     <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.12" />
-    <PackageVersion Include="Verify" Version="31.13.5" />
+    <PackageVersion Include="Verify" Version="31.15.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageVersion Include="Verify.Nunit" Version="31.13.5" />
+    <PackageVersion Include="Verify.Nunit" Version="31.15.0" />
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.5" />
     <PackageVersion Include="Argon" Version="0.33.5" />
     <PackageVersion Include="DiffEngine" Version="19.1.2" />