[ci] Fix windows pytest fatal exception

[Routhleck]

This is an effect of a change introduced with pytest 5.0.0. From the release notes:

#5440: The faulthandler standard library module is now enabled by default to help users diagnose crashes in C modules.

This functionality was provided by integrating the external pytest-faulthandler plugin into the core, so users should remove that plugin from their requirements if used.

For more information see the docs: https://docs.pytest.org/en/stable/usage.html#fault-handler

You can mute these errors as follows:

pytest -p no:faulthandler