Update to Lumino 2 (jupyterlab#12992)

Co-authored-by: Frédéric Collonval <fcollonval@users.noreply.github.com>
Co-authored-by: Frédéric Collonval <fcollonval@gmail.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

package.json

@@ -41,7 +41,7 @@
   "dependencies": {
     "@jupyterlab/collaboration": "^4.0.0-alpha.12",
     "@jupyterlab/shared-models": "^4.0.0-alpha.12",
-    "@lumino/coreutils": "^1.12.0",
+    "@lumino/coreutils": "^2.0.0-alpha.1",
     "lib0": "^0.2.42",
     "y-websocket": "^1.3.15"
   },