Update pytest to 6.2.5

[pyup-bot]

This PR updates pytest from 6.2.4 to 6.2.5.

Changelog

6.2.5

=========================


Trivial/Internal Changes
------------------------

- `8494 <https://github.com/pytest-dev/pytest/issues/8494>`_: Python 3.10 is now supported.


- `9040 <https://github.com/pytest-dev/pytest/issues/9040>`_: Enable compatibility with ``pluggy 1.0`` or later.

Links

• PyPI: https://pypi.org/project/pytest
• Changelog: https://pyup.io/changelogs/pytest/
• Homepage: https://docs.pytest.org/en/latest/

[pyup-bot]

Closing this in favor of #399