CI: Checkout submodules

Author: ZedThree

.github/workflows/build_latest.yml

@@ -17,6 +17,8 @@ jobs:
     steps:
 
     - uses: actions/checkout@v4
+      with:
+        submodules: true
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4

.github/workflows/build_master.yml

@@ -14,6 +14,8 @@ jobs:
     steps:
 
     - uses: actions/checkout@v4
+      with:
+        submodules: true
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4

.github/workflows/build_old.yml

@@ -17,6 +17,8 @@ jobs:
     steps:
 
     - uses: actions/checkout@v4
+      with:
+        submodules: true
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4

.github/workflows/miniconda.yml

@@ -22,6 +22,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        submodules: true
 
     - name: Setup Micromamba
       uses: mamba-org/setup-micromamba@v1