chore(deps): update googlecloudplatform/release-please-action action to v4

Author: renovate-bot

.github/workflows/release-please.yml

@@ -21,7 +21,7 @@ jobs:
   release-please:
     runs-on: ubuntu-latest
     steps:
-      - uses: GoogleCloudPlatform/release-please-action@v3
+      - uses: GoogleCloudPlatform/release-please-action@v4
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           release-type: python