chore(package): update eslint to version 6.7.0

Closes #88

Author: greenkeeper[bot]

package.json

@@ -86,7 +86,7 @@
     "babel-eslint": "^10.0.0",
     "babili-webpack-plugin": "0.1.1",
     "eslint-config-standard": "^12.0.0",
-    "eslint": "^5.0.1",
+    "eslint": "^6.7.0",
     "backpack-core": "^0.7.0",
     "coveralls": "^3.0.2",
     "eslint-plugin-standard": "^4.0.0",