Update dependency prettier to v1.16.4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
prettier	devDependencies	patch	1.16.3 -> 1.16.4	homepage, source

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Release Notes

prettier/prettier

### [`v1.16.4`](https://togithub.com/prettier/prettier/blob/master/CHANGELOG.md#​1164) [Compare Source](https://togithub.com/prettier/prettier/compare/1.16.3...1.16.4) [diff](https://togithub.com/prettier/prettier/compare/1.16.3...1.16.4) - API: Fix `prettier.getSupportInfo()` reporting babel parser for older versions of Prettier. ([#​5826] by [@​azz]) In version `1.16.0` of Prettier, the `babylon` parser was renamed to `babel`. Unfortunately this lead to a minor breaking change: `prettier.getSupportInfo('1.15.0')` would report that it supported `babel`, not `babylon`, which breaks text-editor integrations. This has now been fixed. [@​azz]: https://togithub.com/azz [#​5826]: https://togithub.com/prettier/prettier/pull/5826

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[renovate[bot]]

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[sjparkinson]

Worth noting I have added running prettier --check to the lint script as part of this pull requests.