ci(gh-actions): Fix update-flake-lock workflow

Author: PetarKirov

.github/workflows/update-flake-lock.yml

@@ -6,13 +6,10 @@ on:
 
   # Run every Sunday at 00:00:
   schedule:
-    - cron: 5 * * * * # FIXME: try if it works
-    # - cron: 0 0 * * 0
+    - cron: 0 0 * * 0
 
 jobs:
   main:
-    # Check if the event is not triggered by a fork
-    if: github.event.pull_request.head.repo.full_name == github.repository
     runs-on: ubuntu-latest
 
     steps:
@@ -27,9 +24,16 @@ jobs:
         id: update-lockfile
         run: ./scripts/commit_flake_update.bash
 
+      - uses: tibdex/[email protected]
+        id: generate-token
+        with:
+          app_id: ${{ secrets.APP_ID }}
+          private_key: ${{ secrets.APP_PRIVATE_KEY }}
+
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@v5
         with:
+          token: ${{ steps.generate-token.outputs.token }}
           title: 'Update Nix Flake lockfile'
           commit-message: ${{ env.COMMIT_MSG }}
           branch: 'create-pull-request/update-flake-lockfile'