coverage==5.3
coveralls==2.2.0
pytest-cov==2.10.1
pytest==6.2.0
tox==3.20.1
coverage==5.3
coveralls==2.2.0
pytest-cov==2.10.1
pytest==6.2.0
tox==3.21.0
Bump tox from 3.20.1 to 3.21.0
Bump tox from 3.20.1 to 3.21.0

Bumps [tox](https://github.com/tox-dev/tox) from 3.20.1 to 3.21.0.
- [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/3.20.1...3.21.0)

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