Bump flake8 from 5.0.1 to 5.0.3

Bumps [flake8](https://github.com/pycqa/flake8) from 5.0.1 to 5.0.3.
- [Release notes](https://github.com/pycqa/flake8/releases)
- [Commits](PyCQA/flake8@5.0.1...5.0.3)

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

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

requirements-dev.txt

@@ -1,5 +1,5 @@
 coverage==6.4.2
-flake8==5.0.1
+flake8==5.0.3
 ipdb==0.13.9
 pytest==7.1.2
 pytest-cov==3.0.0