Bump flake8 from 4.0.1 to 7.3.0

Bumps [flake8](https://github.com/pycqa/flake8) from 4.0.1 to 7.3.0.
- [Commits](PyCQA/flake8@4.0.1...7.3.0)

---
updated-dependencies:
- dependency-name: flake8
  dependency-version: 7.3.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements/development.txt

@@ -1,5 +1,5 @@
 -r base.txt
 Werkzeug[watchdog]==3.0.6
-flake8==4.0.1
+flake8==7.3.0
 isort==5.8.0
 pre-commit==2.19.0