Checkout also submodules

.github/workflows/simulation_test.yaml

@@ -1,4 +1,3 @@
-
 name: libsonatareport build and test
 on:
   schedule:
@@ -45,6 +44,7 @@ jobs:
       uses: actions/checkout@v4
       with:
         fetch-depth: 0
+        submodules: 'recursive'
 
     - name: Get HEAD commit message and look for branches
       run: |