setuptools==40.9.0
wheel==0.33.1
pytest==4.4.0
six==1.12.0
tox==3.8.3

setuptools==40.9.0
wheel==0.33.1
pytest==4.4.0
six==1.12.0
tox==3.8.6

Bump tox from 3.8.3 to 3.8.6
Bump tox from 3.8.3 to 3.8.6

Bumps [tox](https://github.com/tox-dev/tox) from 3.8.3 to 3.8.6.
- [Release notes](https://github.com/tox-dev/tox/releases)
- [Changelog](https://github.com/tox-dev/tox/blob/master/docs/changelog.rst)
- [Commits](https://github.com/tox-dev/tox/compare/3.8.3...3.8.6)

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