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]>

Author: dependabot[bot]

requirements-dev.txt

@@ -3,6 +3,6 @@ pytest-cov==4.1.0
 coverage==7.4.0
 mypy==0.950
 pydocstyle==6.1.1
-flake8==4.0.1
+flake8==7.0.0
 pylint==2.13.8
 black==23.12.1