Bump the dependencies group with 3 updates

Bumps the dependencies group with 3 updates: [coverage](https://github.com/nedbat/coveragepy), [mypy](https://github.com/python/mypy) and [pytest](https://github.com/pytest-dev/pytest).


Updates `coverage` from 7.3.1 to 7.4.0
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.3.1...7.4.0)

Updates `mypy` from 1.5.1 to 1.8.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.5.1...v1.8.0)

Updates `pytest` from 7.4.2 to 7.4.4
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.4.2...7.4.4)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dependencies
- dependency-name: mypy
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dependencies
- dependency-name: pytest
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

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