Bump grunt-contrib-clean from 0.5.0 to 2.0.0
Bump grunt-contrib-clean from 0.5.0 to 2.0.0

Bumps [grunt-contrib-clean](https://github.com/gruntjs/grunt-contrib-clean) from 0.5.0 to 2.0.0.
- [Release notes](https://github.com/gruntjs/grunt-contrib-clean/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-clean/blob/master/CHANGELOG)
- [Commits](https://github.com/gruntjs/grunt-contrib-clean/compare/v0.5.0...v2.0.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
thorsten/rinne.info,thorsten/rinne.info