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:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

poetry.lock

@@ -65,7 +65,7 @@ requests = ["requests"]
 pre-commit =  {version = "*", optional = true}
 pytest = "^6.2.5"
 pytest-flake8 = "=1.0.7"
-pytest-cov = "^3.0.0"
+pytest-cov = "^4.1.0"
 tox = "*"
 mypy = "^1.3"
 isort = "^5.11.5"