chore(package): update eslint to version 4.2.0

Author: greenkeeper[bot]

package.json

@@ -109,7 +109,7 @@
     "danger": "0.18.0",
     "enzyme": "2.9.1",
     "enzyme-to-json": "1.5.1",
-    "eslint": "4.1.1",
+    "eslint": "4.2.0",
     "eslint-config-prettier": "2.3.0",
     "eslint-plugin-babel": "4.1.1",
     "eslint-plugin-flowtype": "2.34.1",