Bump flake8 from 4.0.1 to 6.0.0 (#177)

* Bump flake8 from 4.0.1 to 6.0.0

Bumps [flake8](https://github.com/pycqa/flake8) from 4.0.1 to 6.0.0.
- [Release notes](https://github.com/pycqa/flake8/releases)
- [Commits](PyCQA/flake8@4.0.1...6.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

* ignore E231

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Joakim Sørensen <joasoe@gmail.com>

requirements_test.txt

@@ -1,7 +1,7 @@
 mock==4.0.3
 coverage==7.5.1
 black==24.4.2
-flake8==7.0.0
+flake8==6.0.0
 pylint==2.15.5
 pytest==8.2.0
 moto[cognitoidp]>=5.0.0

setup.cfg

@@ -13,4 +13,4 @@ use_parentheses = true
 
 [flake8]
 max-line-length = 88
-ignore = E501, W503, E203
+ignore = E231, E501, W503, E203