chore(deps): update dependency eslint-config-prettier to v4.2.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
eslint-config-prettier	devDependencies	minor	4.1.0 -> 4.2.0	source

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Release Notes

prettier/eslint-config-prettier

### [`v4.2.0`](https://togithub.com/prettier/eslint-config-prettier/blob/master/CHANGELOG.md#Version-420-2019-04-25) [Compare Source](https://togithub.com/prettier/eslint-config-prettier/compare/v4.1.0...v4.2.0) - Added: [@​typescript-eslint/no-extra-parens]. Thanks to Keiichiro Amemiya ([@​Hoishin](https://togithub.com/Hoishin)) and Jen Gorfine ([@​jgorfine](https://togithub.com/jgorfine))!

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