Update dependency nsp to v3

Author: renovate-bot

app/package.json

@@ -15,7 +15,7 @@
     "eslint-config-airbnb-base": "12.0.0",
     "eslint-plugin-import": "2.7.0",
     "eslint-watch": "3.1.2",
-    "nsp": "2.8.1",
+    "nsp": "3.2.1",
     "supervisor": "0.12.0"
   },
   "scripts": {