Specify pyzmq, ipykernel to pass test

[Korakot Chaovavanich]

You can edit .github/workflows/main.yml and add pyzmq, ipykernel.

- name: Install the library
  run: |
    pip install nbdev jupyter pyzmq==17.0.0 ipykernel==4.8.2
    pip install -e .

Then, you will pass the test.