build(deps): bump commander from 4.1.1 to 5.0.0
build(deps): bump commander from 4.1.1 to 5.0.0

Bumps [commander](https://github.com/tj/commander.js) from 4.1.1 to 5.0.0.
- [Release notes](https://github.com/tj/commander.js/releases)
- [Changelog](https://github.com/tj/commander.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tj/commander.js/compare/v4.1.1...v5.0.0)

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