flake8==3.7.7
isort==4.3.20
psycopg2-binary==2.8.3
pylint-django==0.6
pytest-benchmark==3.1.1
pytest-django==3.4.3
pytest==3.8.2
tox==2.9.1

flake8==3.7.7
isort==4.3.20
psycopg2-binary==2.8.3
pylint-django==0.6
pytest-benchmark==3.1.1
pytest-django==3.4.3
pytest==3.8.2
tox==3.13.2

Bump tox from 2.9.1 to 3.13.2
Bump tox from 2.9.1 to 3.13.2

Bumps [tox](https://github.com/tox-dev/tox) from 2.9.1 to 3.13.2.
- [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/2.9.1...3.13.2)

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