Bump pytest-cov from 3.0.0 to 4.1.0

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 3.0.0 to 4.1.0.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v3.0.0...v4.1.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

poetry.lock

@@ -19,7 +19,7 @@ python-dateutil = "==2.8.2"
 xmltodict = "==0.13.0"
 pytest-asyncio = "==0.20.3"
 pytest-aiohttp = "==1.0.4"
-pytest-cov = "==3.0.0"
+pytest-cov = "==4.1.0"
 pytest-freezer = "==0.4.6"
 pytest-socket = "==0.5.1"
 pytest-test-groups = "==1.0.3"