Update dependency eslint-config-prettier to v6.7.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
eslint-config-prettier	devDependencies	minor	6.6.0 -> 6.7.0

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Release Notes

prettier/eslint-config-prettier

### [`v6.7.0`](https://togithub.com/prettier/eslint-config-prettier/blob/master/CHANGELOG.md#Version-670-2019-11-19) [Compare Source](https://togithub.com/prettier/eslint-config-prettier/compare/v6.6.0...dcca556e260af985ece4d9af92531fa649268f80) - Added: [@​typescript-eslint/space-before-function-paren]. Thanks to Masafumi Koba ([@​ybiquitous](https://togithub.com/ybiquitous))!

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