Bumps [commander](https://github.com/tj/commander.js) from 7.1.0 to 7.2.0.
- [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/v7.1.0...v7.2.0)
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