Bump pytest-cov from 2.8.1 to 2.10.0 (#241)

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.8.1 to 2.10.0.
- [Release notes](https://github.com/pytest-dev/pytest-cov/releases)
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v2.8.1...v2.10.0)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements-test.txt

@@ -10,7 +10,7 @@ flake8==3.7.9
 pytest==5.4.3
 pytest-mock==3.0.0
 coveralls==2.0.0
-pytest-cov==2.8.1
+pytest-cov==2.10.0
 
 # Other stuff
 numpy==1.18.5