use unittest.mock instead of mock

[pgajdos]

Could you please consider to use built in unittest.mock?

Background:
https://github.com/mindflayer/python-mocket
https://fedoraproject.org/wiki/Changes/DeprecatePythonMock

[mindflayer]

Sure I will. It was something made for being compatible with old Python versions. No need for it any more.

[mindflayer]

Here is a new version without mock: https://pypi.org/project/mocket/3.10.6/

[pgajdos]

Thanks!