refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -9,9 +9,9 @@
     <PackageVersion Include="Polyfill" Version="7.12.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.147" />
     <PackageVersion Include="System.Text.Json" Version="9.0.1" />
-    <PackageVersion Include="Verify" Version="29.0.0" />
+    <PackageVersion Include="Verify" Version="28.9.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageVersion Include="Verify.XunitV3" Version="29.0.0" />
+    <PackageVersion Include="Verify.XunitV3" Version="28.9.0" />
     <PackageVersion Include="xunit.v3" Version="1.0.1" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.1" />
   </ItemGroup>