Bump flake8 from 6.0.0 to 6.1.0 (#347)

Bumps [flake8](https://github.com/pycqa/flake8) from 6.0.0 to 6.1.0.
- [Commits](PyCQA/flake8@6.0.0...6.1.0)

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

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

requirements-dev.txt

@@ -1,7 +1,7 @@
 -r requirements.txt
 
 mypy==1.4.1
-flake8==6.0.0
+flake8==6.1.0
 flake8-bandit==4.1.1
 flake8-bugbear==23.7.10
 flake8-import-order==0.18.2