Bump pyflakes from 2.1.1 to 2.2.0 (#29)
Bump pyflakes from 2.1.1 to 2.2.0 (#29)

Bumps [pyflakes](https://github.com/PyCQA/pyflakes) from 2.1.1 to 2.2.0.
- [Release notes](https://github.com/PyCQA/pyflakes/releases)
- [Changelog](https://github.com/PyCQA/pyflakes/blob/master/NEWS.rst)
- [Commits](https://github.com/PyCQA/pyflakes/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>
srittau/python-asserts