chore(package): update eslint to version 5.16.0

Closes #91

Author: greenkeeper[bot]

package.json

@@ -86,7 +86,7 @@
     "dotenv": "^6.0.0",
     "enzyme": "^3.3.0",
     "enzyme-adapter-react-16": "^1.2.0",
-    "eslint": "^4.19.1",
+    "eslint": "^5.16.0",
     "eslint-config-prettier": "^3.0.0",
     "eslint-plugin-import": "^2.11.0",
     "eslint-plugin-jsx-a11y": "^6.0.0",