Update flake8 requirement from <=7.1.2,>=5.0.0 to >=5.0.0,<=7.2.0

Updates the requirements on [flake8](https://github.com/pycqa/flake8) to permit the latest version.
- [Commits](PyCQA/flake8@5.0.0...7.2.0)

---
updated-dependencies:
- dependency-name: flake8
  dependency-type: direct:development
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -11,7 +11,7 @@ sphinx-github-style >= 1.0, <= 1.2.2
 
 # linting
 black == 25.1.0
-flake8 >= 5.0.0, <= 7.1.2
+flake8 >= 5.0.0, <= 7.2.0
 flake8-docstrings >= 1.0.0, <= 1.7.0
 flake8-eradicate >= 1.0.0, <= 1.5.0
 flake8-isort >= 5.0.0, <= 6.1.2