ci: use github app token

Author: dargmuesli

.github/workflows/ci.yml

@@ -57,6 +57,7 @@ jobs:
       contents: write
       id-token: write
     secrets:
-      PERSONAL_ACCESS_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
+      GH_APP_PRIVATE_KEY: ${{ secrets.GH_APP_PRIVATE_KEY }}
     with:
+      GH_APP_ID: ${{ vars.GH_APP_ID }}
       INSTALL_NODE_DEPENDENCIES: true