Bump flake8 from 5.0.4 to 7.0.0

Bumps [flake8](https://github.com/pycqa/flake8) from 5.0.4 to 7.0.0.
- [Commits](PyCQA/flake8@5.0.4...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>

Author: dependabot[bot]

poetry.lock

@@ -48,7 +48,7 @@ cryptography = "42.0.4"
 black = "^24.3.0"
 coverage = "^6.5.0"
 django-stubs = "^1.12.0"
-flake8 = "^5.0.4"
+flake8 = "^7.0.0"
 mypy = "^0.982"
 pytest = "^7.2.0"
 pytest-cov = "^4.0.0"