ci: add sync token

Author: Saul-Mirone

.github/workflows/sync-blocksuite.yml

@@ -33,9 +33,11 @@ jobs:
           rm -rf affine_repo
 
       - name: Commit and Push Changes
+        env:
+          GITHUB_TOKEN: ${{ secrets.BS_SYNC_TOKEN }}
         run: |
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
           git add .
           git commit -m "chore: sync affine blocksuite to packages on $(date)" || exit 0
-          git push origin main
+          git push https://x-access-token:${GITHUB_TOKEN}@github.com/toeverything/blocksuite.git main