Bump flake8 from 5.0.2 to 5.0.4 (#453)

Bump flake8 from 5.0.2 to 5.0.4 (#453)

Bumps [flake8](https://github.com/pycqa/flake8) from 5.0.2 to 5.0.4.
- [Release notes](https://github.com/pycqa/flake8/releases)
- [Commits](https://github.com/pycqa/flake8/compare/5.0.2...5.0.4)

---
updated-dependencies:
- dependency-name: flake8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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