Bump tox from 3.19.0 to 3.20.0
Bumps [tox](https://github.com/tox-dev/tox) from 3.19.0 to 3.20.0.
- [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/3.19.0...3.20.0)
Signed-off-by: dependabot[bot] <support@github.com>
dependabot[bot] authored 3 years ago
Markus Gerstel committed 3 years ago