chore(package): update eslint to version 6.2.0

Closes #213

Author: greenkeeper[bot]

package.json

@@ -55,7 +55,7 @@
     "chai": "^4.2.0",
     "enzyme": "^3.10.0",
     "enzyme-adapter-react-16": "^1.14.0",
-    "eslint": "^5.16.0",
+    "eslint": "^6.2.0",
     "eslint-config-airbnb": "^17.1.1",
     "eslint-plugin-import": "^2.18.2",
     "eslint-plugin-jsx-a11y": "^6.2.3",