exclude beta pre-release versions from jupyterlab pin

Author: andrii-i

projects/jupyter-collaboration/pyproject.toml

@@ -30,7 +30,7 @@ classifiers = [
 ]
 dynamic = ["version"]
 dependencies = [
-    "jupyterlab>=4.3.0b2,<4.4.0a2",
+    "jupyterlab==4.3.0",
     "jupyter_collaboration_ui>=1.1.0",
     "jupyter_docprovider>=1.1.0",
     "jupyter_server_ydoc>=1.1.0",