Fix triggering a workflow from a workflow

https://docs.github.com/en/actions/using-workflows/triggering-a-workflow#triggering-a-workflow-from-a-workflow

.github/workflows/update-upstream.yml

@@ -15,6 +15,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: recursive
+          token: ${{ secrets.PAT }}
       - name: Update module
         run: |
           git submodule update --init --recursive --checkout -f --remote