fix: use GitHub App token for fork-sync (workflows permission needed)

.github/workflows/fork-sync-skills.yml

@@ -21,10 +21,16 @@ jobs:
     if: github.repository != 'qwibitai/nanoclaw'
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/create-github-app-token@v1
+        id: app-token
+        with:
+          app-id: ${{ secrets.APP_ID }}
+          private-key: ${{ secrets.APP_PRIVATE_KEY }}
+
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ steps.app-token.outputs.token }}
 
       - uses: actions/setup-node@v4
         with: