build: fixing matrix strategy for image provenance (#410)

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.github/workflows/release-please.yml

@@ -76,10 +76,11 @@ jobs:
  packages: write
  uses: slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@v1.10.0
  strategy:
- matrix: ${{fromJson(needs.release-relay.outputs.images_and_digests)}}
+ matrix: 
+ images_and_digests: ${{fromJson(needs.release-relay.outputs.images_and_digests)}}
  with:
- image: ${{ matrix.image }}
- digest: ${{ matrix.digest }}
+ image: ${{ matrix.images_and_digests.image }}
+ digest: ${{ matrix.images_and_digests.digest }}
  registry-username: ${{ github.actor }}
  secrets:
  registry-password: ${{ secrets.GITHUB_TOKEN }}