Update anchore/sbom-action action to v0.20.1 (#163)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -62,7 +62,7 @@ jobs:
       run: dotnet test --configuration Release --logger:"GitHubActions;report-warnings=false"
 
     - name: Generate SBOM
-      uses: anchore/sbom-action@e11c554f704a0b820cbf8c51673f6945e0731532 # v0.20.0
+      uses: anchore/sbom-action@9246b90769f852b3a8921f330c59e0b3f439d6e9 # v0.20.1
       with:
         artifact-name: build-${{ matrix.os-name }}.spdx.json
         output-file: ./artifacts/build.spdx.json