Bump @babel/node from 7.12.1 to 7.12.6

Bumps [@babel/node](https://github.com/babel/babel/tree/HEAD/packages/babel-node) from 7.12.1 to 7.12.6.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.12.6/packages/babel-node)

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