chore(deps): pin googleapis/release-please-action action to c2a5a2b

Author: renovate[bot]

.github/workflows/release.yaml

@@ -11,7 +11,7 @@ jobs:
   release-please:
     runs-on: ubuntu-latest
     steps:
-      - uses: googleapis/release-please-action@v4
+      - uses: googleapis/release-please-action@c2a5a2bd6a758a0937f1ddb1e8950609867ed15c # v4
         with:
           token: ${{ secrets.PAT_TOKEN }}
           config-file: release-please-config.json