Update: 06/03/22

• Originally, this PR attempted to pin jupyter_client <7.x to fix the services (macOS) Linux JS Tests job.
  However, while pinning jupyter_client <7.x allows the macOS services tests consistently pass locally, the CI test results are not consistent. That change has been discarded.

• Currently, the services (Ubuntu and macOS) tests are being excluded and are to be further addressed in a separate issue.

• Lastly, creating a separate workflow for flaky selenium tests

Using jupyter_client 7.x dependency leads to different behavior.
The execution of the following code in a cell, results in only two of the four expected events

import os
from ipykernel.connect import get_connection_file
with open(get_connection_file(), 'w') as f:
       f.write('garbage')
       os._exit(1)

The two events trigged: 'kernel_restarting.Kernel', 'kernel_autorestarting.Kernel'
The two events not triggered: 'kernel_killed.Session', 'kernel_dead.Kernel'