Update github-actions.yml

checkout submodules to get the data files

.github/workflows/github-actions.yml

@@ -123,6 +123,7 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0
+        submodules: true
     - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python }}