refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -17,6 +17,6 @@
     <PackageVersion Include="Verify" Version="31.7.2" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.NUnit" Version="31.7.2" />
-    <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.3" />
+    <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.4" />>
   </ItemGroup>
 </Project>