fix(deps): update dependency stylus to ^0.59.0

Author: renovate[bot]

09_NodeChatroom/package.json

@@ -12,6 +12,6 @@
     "jade": "*",
     "mongodb": "^3.1.13",
     "socket.io": "^1.0.6",
-    "stylus": "^0.49.1"
+    "stylus": "^0.59.0"
   }
 }