Fix the dependencies

Author: brichet

packages/application/package.json

@@ -42,6 +42,7 @@
     "watch": "tsc -b --watch"
   },
   "dependencies": {
+    "@jupyter-notebook/tree": "^7.5.0-beta.1",
     "@jupyterlab/application": "~4.5.0-beta.1",
     "@jupyterlab/coreutils": "~6.5.0-beta.1",
     "@jupyterlab/docregistry": "~4.5.0-beta.1",