Bump eslint-plugin-prettier from 2.4.0 to 2.7.0 (#21)

Bumps [eslint-plugin-prettier](https://github.com/prettier/eslint-plugin-prettier) from 2.4.0 to 2.7.0.
- [Release notes](https://github.com/prettier/eslint-plugin-prettier/releases)
- [Changelog](https://github.com/prettier/eslint-plugin-prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/eslint-plugin-prettier@v2.4.0...v2.7.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

yarn.lock

@@ -435,8 +435,8 @@ eslint-plugin-node@^6.0.1:
     semver "^5.4.1"
 
 eslint-plugin-prettier@^2.4.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-2.4.0.tgz#85cab0775c6d5e3344ef01e78d960f166fb93aae"
+  version "2.7.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-2.7.0.tgz#b4312dcf2c1d965379d7f9d5b5f8aaadc6a45904"
   dependencies:
     fast-diff "^1.1.1"
     jest-docblock "^21.0.0"