[chore] Bump debug to version 3.1.0

Author: darrachequesne

package.json

@@ -14,7 +14,7 @@
     "test": "mocha"
   },
   "dependencies": {
-    "debug": "~2.6.8",
+    "debug": "~3.1.0",
     "notepack.io": "~2.1.2",
     "redis": "~2.8.0",
     "socket.io-adapter": "~1.1.0",