chore(deps): update dependency @babel/preset-env to v7.4.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
@​babel/preset-env	devDependencies	patch	7.4.0 -> 7.4.1	homepage, source

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Release Notes

babel/babel

### [`v7.4.1`](https://togithub.com/babel/babel/blob/master/CHANGELOG.md#v741-2019-03-20) [Compare Source](https://togithub.com/babel/babel/compare/v7.4.0...v7.4.1) ##### :bug: Bug Fix - `babel-preset-env` - [#​9711](https://togithub.com/babel/babel/pull/9711) Alias [@​babel/preset-env](https://togithub.com/babel/preset-env)/data/built-ins.json.js ([@​nicolo-ribaudo](https://togithub.com/nicolo-ribaudo)) - [#​9709](https://togithub.com/babel/babel/pull/9709) Bring back isPluginRequired ([@​nicolo-ribaudo](https://togithub.com/nicolo-ribaudo))

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