Fix GitHub workflows

Author: arithy

.github/workflows/document.yml

@@ -17,6 +17,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
+        with:
+          submodules: recursive
 
       - name: Set up Python
         uses: actions/setup-python@v6

.github/workflows/release.yml

@@ -28,6 +28,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
+        with:
+          submodules: recursive
 
       - name: Set up Python
         uses: actions/setup-python@v6

.github/workflows/test.yml

@@ -33,6 +33,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
+        with:
+          submodules: recursive
 
       - name: Set up Python
         uses: actions/setup-python@v6
@@ -43,7 +45,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           python -m pip install setuptools wheel build cython
-          python -m pip install flake8, mypy, pytest
+          python -m pip install flake8 mypy pytest
 
       - name: Build wheel and source tarball
         run: |

.github/workflows/testpypi.yml

@@ -28,6 +28,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
+        with:
+          submodules: recursive
 
       - name: Set up Python
         uses: actions/setup-python@v6