Add recursive submodule checkout in GitHub Actions workflow for improved dependency management

Author: robin-rpr

.github/workflows/main.yml

@@ -13,6 +13,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Extract version from tag
         id: get_version