add submodules also for snapshot

Author: moovida

.github/workflows/build.yml

@@ -18,6 +18,9 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
+        with:
+          submodules: recursive
+          fetch-depth: 0
 
       - name: Setup Java
         uses: actions/setup-java@v4