refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -13,6 +13,6 @@
     <PackageVersion Include="ProjectDefaults" Version="1.0.162" />
     <PackageVersion Include="Verify" Version="31.7.2" />
     <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>