Bump coverage from 6.3.3 to 6.4

Bumps [coverage](https://github.com/nedbat/coveragepy) from 6.3.3 to 6.4.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@6.3.3...6.4)

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

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

Author: dependabot[bot]

poetry.lock

@@ -25,7 +25,7 @@ minos-router-graphql = { path = "packages/plugins/minos-router-graphql", develop
 black = "^22.3"
 isort = "^5.8.0"
 pytest = "^7.1.2"
-coverage = "^6.3"
+coverage = "^6.4"
 flake8 = "^4.0.1"
 Sphinx = "^4.0.1"
 pre-commit = "^2.18.1"