Update pytest-mock to 3.5.0

[pyup-bot]

This PR updates pytest-mock from 3.4.0 to 3.5.0.

Changelog

3.5.0

------------------

* Now all patch functions will emit a warning instead of raising a ``ValueError`` when used
as a context-manager. Thanks `iforapsy`_ for the PR (`221`_).

* Additionally, ``mocker.patch.context_manager`` is available when the user intends to mock
a context manager (for example  ``threading.Lock`` object), which will not emit that
warning.

.. _iforapsy: https://github.com/iforapsy
.. _221: https://github.com/pytest-dev/pytest-mock/pull/221

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 #66