Fix the issue with Github Actions

The submodule needs to be synced when checking out the repository.

Ref: https://github.com/actions/checkout

Signed-off-by: Nabarun Pal <[email protected]>

Author: palnabarun

.github/workflows/test.yaml

@@ -12,6 +12,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: true
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v1
       with: