Bump anchore/sbom-action from 0.15.6 to 0.15.8 (#1523)

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -120,7 +120,7 @@ jobs:
         if: ${{ github.event_name == 'push' && github.ref != 'refs/heads/main' }}
 
       - name: Download Syft
-        uses: anchore/sbom-action/download-syft@c6aed38a4323b393d05372c58a74c39ae8386d02 # v0.15.6
+        uses: anchore/sbom-action/download-syft@b6a39da80722a2cb0ef5d197531764a89b5d48c3 # v0.15.8
         if: github.ref_type == 'tag'
 
       - name: Install Cosign