Bump coverage from 6.0.2 to 6.4.1 (#2268)

Bumps [coverage](https://github.com/nedbat/coveragepy) from 6.0.2 to 6.4.1.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](https://github.com/nedbat/coveragepy/compare/6.0.2...6.4.1)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

requirements.txt

@@ -21,7 +21,7 @@ wheel==0.37.1
 # Tests & Linting
 autoflake==1.4
 black==22.3.0
-coverage==6.0.2
+coverage==6.4.1
 cryptography==37.0.2
 flake8==3.9.2
 flake8-bugbear==22.1.11