build(deps-dev): bump pytest-cov from 2.12.1 to 3.0.0 (#365)

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.12.1 to 3.0.0.
- [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@v2.12.1...v3.0.0)

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

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

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

Pipfile

@@ -7,7 +7,7 @@ verify_ssl = true
 black = "==21.9b0"
 pytest = "==6.2.5"
 pytest-asyncio = "==0.15.1"
-pytest-cov = "==2.12.1"
+pytest-cov = "==3.0.0"
 pytest-mock = "==3.6.1"
 pytest-timeout = "==1.4.2"
 mock = "==4.0.3"