chore(main): Use release-pr command again

.github/workflows/candidate-release.yml

@@ -20,4 +20,4 @@ jobs:
           package-name: tsw-timetable-frontend
           bump-minor-pre-major: true
           prerelease: true
-          command: manifest-pr
+          command: release-pr

.github/workflows/github-release.yml

@@ -1,21 +0,0 @@
-on:
-  push:
-    branches:
-      - main
-
-permissions:
-  contents: write
-  pull-requests: write
-
-name: github-release
-
-jobs:
-  release-please:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: google-github-actions/release-please-action@v3
-        with:
-          release-type: node
-          package-name: tsw-timetable-frontend
-          prerelease: true
-          command: github-release