chore(deps): bump actions/attest-build-provenance (#259)

Updates `actions/attest-build-provenance` from 1.3.3 to 1.4.0

Author: dependabot[bot]

.github/workflows/release.yml

@@ -54,7 +54,7 @@ jobs:
         labels: ${{ steps.docker-meta.outputs.labels }}
 
     - name: Attest image
-      uses: actions/attest-build-provenance@5e9cb68e95676991667494a6a4e59b8a2f13e1d0  # v1.3.3
+      uses: actions/attest-build-provenance@210c1913531870065f03ce1f9440dd87bc0938cd  # v1.4.0
       with:
         subject-name: index.docker.io/${{ env.DOCKER_IMAGE_NAME }}
         subject-digest: ${{ steps.docker-push.outputs.digest }}