fix(deps): update dependency mobx to v6.4.1

Author: renovate-bot

ui/package-lock.json

@@ -30,7 +30,7 @@
     "lodash.merge": "4.6.2",
     "lodash.throttle": "4.1.1",
     "lodash.uniqueid": "4.0.1",
-    "mobx": "6.4.0",
+    "mobx": "6.4.1",
     "mobx-react-lite": "3.3.0",
     "mobx-stored": "1.1.0",
     "promise-retry": "2.0.1",