refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -15,7 +15,7 @@
     <PackageVersion Include="Verify.XunitV3" Version="28.5.0" />
     <PackageVersion Include="xunit.v3" Version="0.7.0-pre.15" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.0-pre.49" />
-    <PackageVersion Include="NUnit" Version="4.2.2" />
+    <PackageVersion Include="NUnit" Version="4.3.0" />
     <PackageVersion Include="Verify.NUnit" Version="28.5.0" />
   </ItemGroup>
 </Project>