Update pytest to 5.4.3

[pyup-bot]

This PR updates pytest from 5.4.1 to 5.4.3.

The bot wasn't able to find a changelog for this release. Got an idea?

Links

• PyPI: https://pypi.org/project/pytest
• Homepage: https://docs.pytest.org/en/latest/

[codecov]

Codecov Report

Merging #802 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #802   +/-   ##
=======================================
  Coverage   82.28%   82.28%           
=======================================
  Files          11       11           
  Lines         542      542           
=======================================
  Hits          446      446           
  Misses         96       96           

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