omegaconf dependency

.github/workflows/testing.yml

@@ -33,7 +33,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install .
-          pip install pytest
+          pip install pytest omegaconf
       - name: Get test data from OSF
         run: |
           mkdir -p data/dataset_2_submissions tests/data/ tests/results