Update cmake.yml - checkout submodules

.github/workflows/cmake.yml

@@ -20,6 +20,15 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
+    - name: Checkout submodules # checkout rest
+      shell: bash
+      run: |
+        # If your submodules are configured to use SSH instead of HTTPS please uncomment the following line
+        # git config --global url."https://github.com/".insteadOf "git@github.com:"
+        auth_header="$(git config --local --get http.https://github.com/.extraheader)"
+        git submodule sync --recursive
+        git -c "http.extraheader=$auth_header" -c protocol.version=2 submodule update --init --force --recursive --depth=1
+        
     - name: Install LLVM
       run: sudo apt-get install -y llvm