Bump the dev-dependencies group with 4 updates

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


Updates `flake8` from 4.0.1 to 5.0.4
- [Commits](PyCQA/flake8@4.0.1...5.0.4)

Updates `pytest` from 7.1.2 to 7.4.0
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.1.2...7.4.0)

Updates `pytest-cov` from 3.0.0 to 4.1.0
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v3.0.0...v4.1.0)

Updates `black` from 22.6.0 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@22.6.0...23.3.0)

---
updated-dependencies:
- dependency-name: flake8
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: pytest
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
- dependency-name: pytest-cov
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: black
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
...

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

Author: dependabot[bot]