chore(deps): bump anchore/sbom-action from 0.20.5 to 0.20.6 (#973)

Bumps [anchore/sbom-action](https://github.com/anchore/sbom-action) from 0.20.5 to 0.20.6.
- [Release notes](https://github.com/anchore/sbom-action/releases)
- [Changelog](https://github.com/anchore/sbom-action/blob/main/RELEASE.md)
- [Commits](anchore/sbom-action@v0.20.5...v0.20.6)

---
updated-dependencies:
- dependency-name: anchore/sbom-action
  dependency-version: 0.20.6
  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

@@ -35,7 +35,7 @@ jobs:
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
       - uses: sigstore/[email protected]
-      - uses: anchore/sbom-action/[email protected].5
+      - uses: anchore/sbom-action/[email protected].6
       - uses: docker/setup-qemu-action@v3
       - uses: docker/setup-buildx-action@v3
       - uses: cachix/install-nix-action@v31