Fix: ensure submodules are also checked out

Author: jeroenvdmeer

.github/workflows/build-and-deploy.yml

@@ -7,6 +7,8 @@ jobs:
     steps:      
       - name: 'Checkout Fred'
         uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: 'Checkout database'
         uses: actions/checkout@v4