Bump flake8 from 5.0.4 to 6.0.0

Bumps [flake8](https://github.com/pycqa/flake8) from 5.0.4 to 6.0.0.
- [Release notes](https://github.com/pycqa/flake8/releases)
- [Commits](PyCQA/flake8@5.0.4...6.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -15,7 +15,7 @@ requests = "^2.28.2"
 yamllint = "^1.30.0"
 codespell = "^2.2.4"
 black = "23.3.0"
-flake8 = "5.0.4"
+flake8 = "6.0.0"
 pep8-naming = "0.13.3"
 
 [build-system]