Bump flake8 from 6.1.0 to 7.0.0

Bumps [flake8](https://github.com/pycqa/flake8) from 6.1.0 to 7.0.0.
- [Commits](PyCQA/flake8@6.1.0...7.0.0)

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

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

requirements_dev.txt

@@ -2,7 +2,7 @@
 aioresponses==0.7.6
 black==23.7.0
 flake8-docstrings==1.7.0
-flake8==6.1.0
+flake8==7.0.0
 mypy==1.8.0
 pre-commit-hooks==4.4.0
 pre-commit==3.4.0