Update unit-test.yml

Author: mohammadll

.github/workflows/unit-test.yml

@@ -13,6 +13,7 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v4
       with:
+        submodules: true
         ref: ${{ github.event.pull_request.head.ref }}
         repository: ${{ github.event.pull_request.head.repo.full_name }}