Update query-string to the latest version 🚀 (#1379)

* fix(package): update query-string to version 6.9.0

* chore(package): update lockfile package-lock.json

Author: greenkeeper[bot]

package-lock.json

@@ -58,7 +58,7 @@
     "passport-local": "1.0.0",
     "prismjs": "1.17.0",
     "prop-types": "15.7.2",
-    "query-string": "6.8.3",
+    "query-string": "6.9.0",
     "react": "16.11.0",
     "react-dnd": "9.4.0",
     "react-dnd-html5-backend": "9.4.0",