feat: use a github app token to enable running workflows on automatic…

… PR creation (#70)

.github/workflows/update-submodules.yml

@@ -28,12 +28,19 @@ jobs:
       - run: npm ci
       - run: npm run update-submodules
 
+      - name: Generate token
+        uses: tibdex/github-app-token@v2
+        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@v6-rc
         with:
+          token: ${{ steps.generate-token.outputs.token }}
           delete-branch: true
           commit-message: Update sub-modules
           title: Update sub-modules
           body: |
             Update sub-modules
-