chore(deps): update actions/attest-build-provenance action to v4 in .github/workflows/release.yaml (#539)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/release.yaml

@@ -62,7 +62,7 @@ jobs:
           echo "digest=${DIGEST}" >> $GITHUB_OUTPUT
 
       - name: Attest chart OCI artifact
-        uses: actions/attest-build-provenance@v3
+        uses: actions/attest-build-provenance@v4
         with:
           subject-name: ghcr.io/${{ github.repository_owner }}/charts/atlantis
           subject-digest: ${{ steps.push-chart.outputs.digest }}