Update pytest to 4.4.1

[pyup-bot]

This PR updates pytest from 4.4.0 to 4.4.1.

Changelog

4.4.1

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

Bug Fixes
---------

- `5031 <https://github.com/pytest-dev/pytest/issues/5031>`_: Environment variables are properly restored when using pytester's ``testdir`` fixture.


- `5039 <https://github.com/pytest-dev/pytest/issues/5039>`_: Fix regression with ``--pdbcls``, which stopped working with local modules in 4.0.0.


- `5092 <https://github.com/pytest-dev/pytest/issues/5092>`_: Produce a warning when unknown keywords are passed to ``pytest.param(...)``.


- `5098 <https://github.com/pytest-dev/pytest/issues/5098>`_: Invalidate import caches with ``monkeypatch.syspath_prepend``, which is required with namespace packages being used.

Links

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