chore(package): update eslint-config-prettier to version 6.9.0

Closes #69

Author: greenkeeper[bot]

package.json

@@ -37,7 +37,7 @@
     "autoprefixer": "9.7.3",
     "babel-eslint": "10.0.3",
     "eslint": "6.7.2",
-    "eslint-config-prettier": "6.7.0",
+    "eslint-config-prettier": "6.9.0",
     "eslint-plugin-prettier": "3.1.1",
     "eslint-plugin-react": "7.17.0",
     "eslint-plugin-react-hooks": "2.3.0",