Bump anchore/sbom-action from 0.15.5 to 0.15.6 (#160)

Bumps [anchore/sbom-action](https://github.com/anchore/sbom-action) from 0.15.5 to 0.15.6.
- [Release notes](https://github.com/anchore/sbom-action/releases)
- [Commits](anchore/sbom-action@24b0d52...c6aed38)

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

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -29,7 +29,7 @@ jobs:
           check-latest: true
 
       - uses: sigstore/cosign-installer@9614fae9e5c5eddabb09f90a270fcb487c9f7149 # v3.3.0
-      - uses: anchore/sbom-action/download-syft@24b0d5238516480139aa8bc6f92eeb7b54a9eb0a # v0.15.5
+      - uses: anchore/sbom-action/download-syft@c6aed38a4323b393d05372c58a74c39ae8386d02 # v0.15.6
       - uses: imjasonh/setup-crane@00c9e93efa4e1138c9a7a5c594acd6c75a2fbf0c # v0.3
 
       - name: Log into ghcr.io