Bump flake8 from 3.8.3 to 7.1.1 (#59)

Bumps [flake8](https://github.com/pycqa/flake8) from 3.8.3 to 7.1.1.
- [Commits](PyCQA/flake8@3.8.3...7.1.1)

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

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

requirements.txt

@@ -11,7 +11,7 @@ pylint
 pre-commit==2.7.1
 pyupgrade==3.19.0
 black==20.8b1
-flake8==3.8.3
+flake8==7.1.1
 # flake8-docstrings==1.5.0
 pydocstyle==6.3.0
 bandit==1.6.2