build(deps): bump the ci group with 1 update

Bumps the ci group with 1 update: [anchore/sbom-action](https://github.com/anchore/sbom-action).

Updates `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
  dependency-group: ci
...

Signed-off-by: dependabot[bot] <[email protected]>
(cherry picked from commit 97a9b88)

.github/workflows/release.yml

@@ -92,7 +92,7 @@ jobs:
           mkdir -p config/release
           kustomize build ./config/crd > ./config/release/${{ env.CONTROLLER }}.crds.yaml
           kustomize build ./config/manager > ./config/release/${{ env.CONTROLLER }}.deployment.yaml
-      - uses: anchore/sbom-action/download-syft@24b0d5238516480139aa8bc6f92eeb7b54a9eb0a # v0.15.5
+      - uses: anchore/sbom-action/download-syft@c6aed38a4323b393d05372c58a74c39ae8386d02 # v0.15.6
       - name: Create release and SBOM
         id: run-goreleaser
         if: startsWith(github.ref, 'refs/tags/v')