ci(test_core): ignore test_synthesizer/test_context_generator.py

Add test_synthesizer/test_context_generator.py to ingore list when
running dev tests without secrets. This test suite requires secrets

Author: BloggerBust

.github/workflows/test_core.yml

@@ -96,4 +96,5 @@ jobs:
         if: ${{ env.OPENAI_API_KEY == '' }}
         run: |
           poetry run pytest -vv -rA --maxfail=1 --capture=tee-sys tests/test_core/test_synthesizer/ tests/test_core/test_datasets/ \
-          --ignore=tests/test_core/test_tracing/test_dataset_iterator.py
+          --ignore=tests/test_core/test_tracing/test_dataset_iterator.py            \
+          --ignore=tests/test_core/test_synthesizer/test_context_generator.py