chore(deps-dev): bump pytest-cov from 2.10.1 to 2.11.0

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.10.1 to 2.11.0.
- [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@v2.10.1...v2.11.0)

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

dev-requirements.txt

@@ -2,7 +2,7 @@ pydantic_openapi_helper==0.2.4
 coverage==5.3.1
 coveralls==2.2.0
 pytest==6.2.1
-pytest-cov==2.10.1
+pytest-cov==2.11.0
 attrs~=20.3.0
 Sphinx==3.4.3
 sphinx-bootstrap-theme==0.7.1