chore(deps): bump actions/attest-build-provenance in the actions group (#249)

Author: dependabot[bot]

.github/workflows/release.yml

@@ -40,7 +40,7 @@ jobs:
           path: dist
 
       - name: Generate artifact attestation for sdist and wheel
-        uses: actions/attest-build-provenance@db473fddc028af60658334401dc6fa3ffd8669fd # v2.3.0
+        uses: actions/attest-build-provenance@e8998f949152b193b063cb0ec769d69d929409be # v2.4.0
         with:
           subject-path: "dist/pyproject*"