Bump babel-minify from 0.5.1 to 0.5.2 (#1848)

Bumps [babel-minify](https://github.com/babel/minify) from 0.5.1 to 0.5.2.
- [Release notes](https://github.com/babel/minify/releases)
- [Changelog](https://github.com/babel/minify/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/minify/compare/babel-minify@0.5.1...babel-minify@0.5.2)

---
updated-dependencies:
- dependency-name: babel-minify
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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