Bump anchore/sbom-action from 0.19.0 to 0.20.0 (#923)

Bumps [anchore/sbom-action](https://github.com/anchore/sbom-action) from 0.19.0 to 0.20.0.
- [Release notes](https://github.com/anchore/sbom-action/releases)
- [Changelog](https://github.com/anchore/sbom-action/blob/main/RELEASE.md)
- [Commits](anchore/sbom-action@9f73021...e11c554)

---
updated-dependencies:
- dependency-name: anchore/sbom-action
  dependency-version: 0.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -81,7 +81,7 @@ jobs:
         token: ${{ secrets.CODECOV_TOKEN }}
 
     - name: Generate SBOM
-      uses: anchore/sbom-action@9f7302141466aa6482940f15371237e9d9f4c34a # v0.19.0
+      uses: anchore/sbom-action@e11c554f704a0b820cbf8c51673f6945e0731532 # v0.20.0
       with:
         artifact-name: build-${{ matrix.os-name }}.spdx.json
         output-file: ./artifacts/build.spdx.json