Update Workflow.yml

Author: chuongmep

.github/workflows/Workflow.yml

@@ -15,5 +15,7 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v1
+        with:
+          submodules: true
       - name: Run Nuke Build
         run: ./.nuke/build.cmd --GitHubToken ${{ secrets.GITHUB_TOKEN }}