Update Microsoft.Sbom.Targets to 4.0.3

---
updated-dependencies:
- dependency-name: Microsoft.Sbom.Targets
  dependency-version: 4.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/Directory.Packages.props

@@ -14,6 +14,6 @@
     <PackageVersion Include="Verify" Version="30.1.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.Nunit" Version="30.1.0" />
-    <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.0.2" />
+    <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.0.3" />
   </ItemGroup>
 </Project>