chore(actions)(deps): bump actions/attest-build-provenance from 1 to 2

Bumps [actions/attest-build-provenance](https://github.com/actions/attest-build-provenance) from 1 to 2.
- [Release notes](https://github.com/actions/attest-build-provenance/releases)
- [Changelog](https://github.com/actions/attest-build-provenance/blob/main/RELEASE.md)
- [Commits](https://github.com/actions/attest-build-provenance/compare/v1...v2)

---
updated-dependencies:
- dependency-name: actions/attest-build-provenance
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build-push-attest-docker.yml

@@ -59,7 +59,7 @@ jobs:
             ghcr.io/${{ github.repository }}:${{ inputs.release }}
 
       - name: Generate artifact attestation
-        uses: actions/attest-build-provenance@v1
+        uses: actions/attest-build-provenance@v2
         with:
           subject-name: ghcr.io/${{ github.repository }}
           subject-digest: ${{ steps.push.outputs.digest }}