chore(deps): bump coverage from 6.3.2 to 6.4.1 (#40)

Bumps [coverage](https://github.com/nedbat/coveragepy) from 6.3.2 to 6.4.1.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@6.3.2...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>

req.txt

@@ -4,7 +4,7 @@ attrs==21.4.0
 Babel==2.9.1
 certifi==2021.10.8
 charset-normalizer==2.0.9
-coverage==6.3.2
+coverage==6.4.1
 distlib==0.3.4
 docutils==0.17.1
 filelock==3.4.2