chore(deps): update actions/attest-build-provenance action to v2.4.0

Author: renovate[bot]

.github/workflows/python-publish.yml

@@ -107,7 +107,7 @@ jobs:
           tags: ${{ env.IMAGE_NAME }}:${{ needs.tagpr.outputs.tag }}
 
       - name: Generate artifact attestation
-        uses: actions/attest-build-provenance@db473fddc028af60658334401dc6fa3ffd8669fd # v2.3.0
+        uses: actions/attest-build-provenance@e8998f949152b193b063cb0ec769d69d929409be # v2.4.0
         with:
           subject-name: index.docker.io/${{ env.IMAGE_NAME }}
           subject-digest: ${{ steps.push.outputs.digest }}