Update fork-sync.yml

fix: github token for fork-sync

Author: maze88

.github/workflows/fork-sync.yml

@@ -25,4 +25,4 @@ jobs:
       upstream-owner: k8snetworkplumbingwg
       default-branch: master
     secrets:
-      gh_token: ${{ secrets.GITHUB_TOKEN }}
+      gh_token: ${{ secrets.GH_TOKEN_NVIDIA_CI_CD }}