chore(package): update eslint-plugin-node to version 9.0.1

Closes #120

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
     "eslint": "5.7.0",
     "eslint-config-standard": "^12.0.0",
     "eslint-plugin-import": "^2.14.0",
-    "eslint-plugin-node": "^7.0.1",
+    "eslint-plugin-node": "^9.0.1",
     "eslint-plugin-promise": "^4.0.1",
     "eslint-plugin-standard": "^4.0.0",
     "guide4you": "3.3.*",