ci: upgrade to googleapis/release-please-action@v4

Author: damienwebdev

.github/workflows/release-please.yml

@@ -9,8 +9,6 @@ jobs:
   release-please:
     runs-on: ubuntu-latest
     steps:
-      - uses: google-github-actions/release-please-action@v3
+      - uses: googleapis/release-please-action@v4
         with:
           token: ${{ secrets.GRAYCORE_GITHUB_TOKEN }}
-          command: manifest
-          default-branch: main