Bump the major-updates group with 4 updates

Bumps the major-updates group with 4 updates: [pytest](https://github.com/pytest-dev/pytest), [flake8](https://github.com/pycqa/flake8), [black](https://github.com/psf/black) and [mypy](https://github.com/python/mypy).


Updates `pytest` from 6.2.5 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@6.2.5...7.4.4)

Updates `flake8` from 3.9.2 to 5.0.4
- [Commits](PyCQA/flake8@3.9.2...5.0.4)

Updates `black` from 22.12.0 to 23.3.0
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@22.12.0...23.3.0)

Updates `mypy` from 0.910 to 1.4.1
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v0.910...v1.4.1)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: major-updates
- dependency-name: flake8
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: major-updates
- dependency-name: black
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: major-updates
- dependency-name: mypy
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: major-updates
...

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