Bump eslint-config-prettier from 4.3.0 to 6.0.0 (#19)

Bumps [eslint-config-prettier](https://github.com/prettier/eslint-config-prettier) from 4.3.0 to 6.0.0.
- [Release notes](https://github.com/prettier/eslint-config-prettier/releases)
- [Changelog](https://github.com/prettier/eslint-config-prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/eslint-config-prettier@v4.3.0...v6.0.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -73,7 +73,7 @@
     "@typescript-eslint/eslint-plugin": "^1.10.2",
     "@typescript-eslint/parser": "^1.10.2",
     "eslint": "^5.16.0",
-    "eslint-config-prettier": "^4.3.0",
+    "eslint-config-prettier": "^6.0.0",
     "eslint-plugin-prettier": "^3.1.0",
     "jest": "^24.8.0",
     "ts-jest": "^24.0.2",