chore(package): update eslint-plugin-node to version 11.1.0

Closes #62

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "eslint": "^5.10.0",
     "eslint-config-standard": "^12.0.0",
     "eslint-plugin-import": "^2.14.0",
-    "eslint-plugin-node": "^8.0.0",
+    "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^4.0.1",
     "eslint-plugin-standard": "^4.0.0",
     "mocha": "^5.2.0",