[Deps] update qs

Author: ljharb

package.json

@@ -5,7 +5,7 @@
   "author": "defunctzombie",
   "dependencies": {
     "punycode": "^1.4.1",
-    "qs": "^6.11.2"
+    "qs": "^6.12.3"
   },
   "main": "./url.js",
   "keywords": [