Bump tar from 2.2.1 to 2.2.2 in /examples/babel

Bumps [tar](https://github.com/npm/node-tar) from 2.2.1 to 2.2.2.
- [Release notes](https://github.com/npm/node-tar/releases)
- [Commits](isaacs/node-tar@v2.2.1...v2.2.2)

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