-r requirements.txt

flake8==3.7.9
tox==3.14.3
pytest==4.6.8

-r requirements.txt

flake8==3.7.9
tox==3.14.3
pytest==4.6.9

Bump pytest from 4.6.8 to 4.6.9
Bump pytest from 4.6.8 to 4.6.9

Bumps [pytest](https://github.com/pytest-dev/pytest) from 4.6.8 to 4.6.9.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/4.6.9/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest/compare/4.6.8...4.6.9)

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