ci: downgrade release-please to v3

Author: Marc Jakobi

.github/workflows/release-please.yml

@@ -16,7 +16,7 @@ jobs:
     name: release
     runs-on: ubuntu-latest
     steps:
-      - uses: googleapis/release-please-action@v4
+      - uses: googleapis/release-please-action@v3
         with:
           release-type: simple
           token: ${{ secrets.PAT }}