Warning `should_run_async` will not call `transform_cell`

[vochicong]

should_run_async will not call transform_cell automatically in the future. Please pass the result to transformed_cell argument and any exception that happen during thetransform in preprocessing_exc_tuple in IPython 7.17 and above.

ipython/ipykernel#540

Fix by

pip install "ipykernel==6.0.0a5" "ipython==7.21.0"

[KaiserAle24]

@vochicong Thank you very much