Bump flake8 from 4.0.1 to 7.0.0

Bumps [flake8](https://github.com/pycqa/flake8) from 4.0.1 to 7.0.0.
- [Commits](PyCQA/flake8@4.0.1...7.0.0)

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

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

requirements-dev.txt

@@ -1,7 +1,7 @@
 pytest==7.3.2
 pytest-runner==6.0.0
 isort==5.11.2
-flake8==4.0.1
+flake8==7.0.0
 mypy==1.6.0
 black==22.3.0
 setuptools==68.2.2