Update Directory.Packages.props

Author: SimonCropp

src/Directory.Packages.props

@@ -15,6 +15,7 @@
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.4" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="9.0.4" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+    <PackageVersion Include="Microsoft.Sbom.Targets" Version="3.1.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.152" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.Http" Version="6.5.0" />