[local] Update github token to have workflow permissions

Author: Fricounet

.github/workflows/sync.yml

@@ -17,5 +17,5 @@ jobs:
       with:
         github_actor: "${GITHUB_ACTOR}"
         github_repository: "${GITHUB_REPOSITORY}"
-        github_token: ${{ secrets.GITHUB_TOKEN }}
+        github_token: ${{ secrets.WORKFLOW_TOKEN }}
         upstream_repo: kubernetes-csi/external-snapshotter