chore(package): update eslint-config-prettier to version 6.11.0

Closes #68

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
   "devDependencies": {
     "eslint": "^5.14.1",
     "eslint-config-airbnb": "^17.1.0",
-    "eslint-config-prettier": "^4.0.0",
+    "eslint-config-prettier": "^6.11.0",
     "eslint-plugin-import": "^2.16.0",
     "eslint-plugin-jsx-a11y": "^6.2.1",
     "eslint-plugin-prettier": "^3.0.1",