Bump pytest-flake8 from 1.1.0 to 1.1.1

Bumps [pytest-flake8](https://github.com/tholo/pytest-flake8) from 1.1.0 to 1.1.1.
- [Release notes](https://github.com/tholo/pytest-flake8/releases)
- [Changelog](https://github.com/tholo/pytest-flake8/blob/master/CHANGELOG)
- [Commits](tholo/pytest-flake8@1.1.0...1.1.1)

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

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

Author: dependabot[bot]