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

Closes #72

Author: greenkeeper[bot]

package.json

@@ -75,7 +75,7 @@
   "devDependencies": {
     "eslint": "^6.0.1",
     "eslint-plugin-import": "^2.18.2",
-    "eslint-plugin-node": "^9.1.0",
+    "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^4.2.1",
     "flow-bin": "^0.103.0",
     "jest": "^24.8.0"