Update pytest-mock to 3.8.1

[pyup-bot]

This PR updates pytest-mock from 3.6.1 to 3.8.1.

Changelog

3.8.1

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* Fix regression caused by an explicit ``mock`` dependency in the code (`298`_).

.. _298: https://github.com/pytest-dev/pytest-mock/issues/298

3.8.0

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* Add ``MockerFixture.async_mock`` method. Thanks `PerchunPak`_ for the PR (`296`_).

.. _PerchunPak: https://github.com/PerchunPak
.. _296: https://github.com/pytest-dev/pytest-mock/pull/296

3.7.0

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* Python 3.10 now officially supported.
* Dropped support for Python 3.6.

Links

• PyPI: https://pypi.org/project/pytest-mock
• Changelog: https://pyup.io/changelogs/pytest-mock/
• Repo: https://github.com/pytest-dev/pytest-mock/

[pyup-bot]

Closing this in favor of #59