Bump coverage from 5.5 to 6.4.2

Bumps [coverage](https://github.com/nedbat/coveragepy) from 5.5 to 6.4.2.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](coveragepy/coveragepy@coverage-5.5...6.4.2)

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

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

Author: dependabot[bot]

poetry.lock

@@ -25,7 +25,7 @@ orjson = "^3.7.7"
 pre-commit = "^2.17.0"
 black = "^22.1.0"
 isort = "^5.10.1"
-coverage = {extras = ["toml"], version = "^5.3"}
+coverage = {extras = ["toml"], version = "^6.4"}
 mypy = "^0.910"
 detect-secrets = "^1.2.0"
 bandit = "^1.7.0"