Bump pytest-cov from 3.0.0 to 4.0.0 (#69)

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 3.0.0 to 4.0.0.
- [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@v3.0.0...v4.0.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -93,7 +93,7 @@ pytest==7.1.3
     #   pytest-sugar
 pytest-cookies==0.6.1
     # via -r requirements.in
-pytest-cov==3.0.0
+pytest-cov==4.0.0
     # via -r requirements.in
 pytest-instafail==0.4.2
     # via -r requirements.in