Bump babel-plugin-external-helpers from 6.18.0 to 6.22.0 (#110)
Bump babel-plugin-external-helpers from 6.18.0 to 6.22.0 (#110)

Bumps [babel-plugin-external-helpers](https://github.com/babel/babel) from 6.18.0 to 6.22.0.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/compare/v6.18.0...v6.22.0)

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