Merge #105

105: Update pytest-cov to 3.0.0 r=aragilar a=pyup-bot


This PR updates [pytest-cov](https://pypi.org/project/pytest-cov) from **2.12.1** to **3.0.0**.



<details>
  <summary>Changelog</summary>
  
  
   ### 3.0.0
   ```
   -------------------

**Note that this release drops support for Python 2.7 and Python 3.5.**

* Added support for Python 3.10 and updated various test dependencies.
  Contributed by Hugo van Kemenade in
  `500 &lt;https://github.com/pytest-dev/pytest-cov/pull/500&gt;`_.
* Switched from Travis CI to GitHub Actions. Contributed by Hugo van Kemenade in
  `494 &lt;https://github.com/pytest-dev/pytest-cov/pull/494&gt;`_ and
  `495 &lt;https://github.com/pytest-dev/pytest-cov/pull/495&gt;`_.
* Add a ``--cov-reset`` CLI option.
  Contributed by Danilo Šegan in
  `459 &lt;https://github.com/pytest-dev/pytest-cov/pull/459&gt;`_.
* Improved validation of ``--cov-fail-under`` CLI option.
  Contributed by ... Ronny Pfannschmidt&#39;s desire for skark in
  `480 &lt;https://github.com/pytest-dev/pytest-cov/pull/480&gt;`_.
* Dropped Python 2.7 support.
  Contributed by Thomas Grainger in
  `488 &lt;https://github.com/pytest-dev/pytest-cov/pull/488&gt;`_.
* Updated trove classifiers. Contributed by Michał Bielawski in
  `481 &lt;https://github.com/pytest-dev/pytest-cov/pull/481&gt;`_.
   ```
   
  
  
   ### 2.13.0
   ```
   -------------------

* Changed the `toml` requirement to be always be directly required (instead of being required through a coverage extra).
  This fixes issues with pip-compile (`pip-tools1300 &lt;https://github.com/jazzband/pip-tools/issues/1300&gt;`_).
  Contributed by Sorin Sbarnea in `472 &lt;https://github.com/pytest-dev/pytest-cov/pull/472&gt;`_.
* Documented ``show_contexts``.
  Contributed by Brian Rutledge in `473 &lt;https://github.com/pytest-dev/pytest-cov/pull/473&gt;`_.
   ```
   
  
</details>


 

<details>
  <summary>Links</summary>
  
  - PyPI: https://pypi.org/project/pytest-cov
  - Changelog: https://pyup.io/changelogs/pytest-cov/
  - Repo: https://github.com/pytest-dev/pytest-cov
</details>



Co-authored-by: pyup-bot <github-bot@pyup.io>

test-requirements.txt

@@ -1,2 +1,2 @@
 pytest==6.2.4
-pytest-cov==2.12.1
+pytest-cov==3.0.0