Bump anchore/sbom-action from 0.15.11 to 0.16.0 (nginx#1998)

Bumps [anchore/sbom-action](https://github.com/anchore/sbom-action) from 0.15.11 to 0.16.0.
- [Release notes](https://github.com/anchore/sbom-action/releases)
- [Commits](anchore/sbom-action@7ccf588...e8d2a69)

---
updated-dependencies:
- dependency-name: anchore/sbom-action
  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>

.github/workflows/ci.yml

@@ -137,7 +137,7 @@ jobs:
         if: ${{ github.event_name == 'push' && github.ref != 'refs/heads/main' }}
 
       - name: Download Syft
-        uses: anchore/sbom-action/download-syft@7ccf588e3cf3cc2611714c2eeae48550fbc17552 # v0.15.11
+        uses: anchore/sbom-action/download-syft@e8d2a6937ecead383dfe75190d104edd1f9c5751 # v0.16.0
         if: github.ref_type == 'tag'
 
       - name: Install Cosign