fix: use SYNC_TOKEN for workflow permissions

Author: dcabib

.github/workflows/sync-to-mirror-repo.yml

@@ -22,5 +22,5 @@ jobs:
 
       - name: Push to mirror repo
         run: |
-          git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}.git
+          git remote set-url origin https://x-access-token:${{ secrets.SYNC_TOKEN }}@github.com/${{ github.repository }}.git
           git push origin develop:develop --force