chore(package): update eslint to version 6.6.0

Closes #33

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "ember-source": "~3.7.0",
     "ember-source-channel-url": "^1.1.0",
     "ember-try": "^0.2.23",
-    "eslint": "^5.12.0",
+    "eslint": "^6.6.0",
     "eslint-config-bbva": "^2.0.3",
     "eslint-plugin-ember": "^6.1.0",
     "eslint-plugin-node": "^8.0.1",