Deploy: Fix submodules

.github/workflows/python-publish.yml

@@ -16,13 +16,14 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: recursive
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
         python-version: '3.x'
     - name: Install dependencies
       run: |
-        git submodule sync --recursive
         python -m pip install --upgrade pip
         pip install setuptools wheel twine
     - name: Build and publish