Bump pytest-cov from 2.11.0 to 2.11.1 (#569)

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.11.0 to 2.11.1.
- [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@v2.11.0...v2.11.1)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

requirements/testing.txt

@@ -8,7 +8,7 @@ pydocstyle==5.1.1
 pylint==2.6.0
 pylint-strict-informational==0.1
 pytest==6.2.1
-pytest-cov==2.11.0
+pytest-cov==2.11.1
 pytest-timeout==1.4.2
 setuptools==51.3.3
 tox==3.21.2