jupyterlab 2.3.1 depends on jupyterlab-server<2.0 and >=1.1.5

Author: hephaex

vendor/ngc-tensorflow/requirements.py36.txt

@@ -134,14 +134,14 @@ jupyter-nbextensions-configurator==0.4.1
 jupyter-server-proxy==1.6.0
 #jupyter-tensorboard==0.2.0
 #jupyterlab==3.0.7
-jupyterlab==2.2.9
+jupyterlab==2.3.1
 jupyterlabutils==0.10.0
 jupyterlab-launcher==0.13.1
 jupyterlab-git==0.23.3
 jupyterlab-github==2.0.0
 jupyterlab-nvdashboard==0.4.0
 #jupyterlab-zip==1.0.1
-jupyterlab-server==2.1.5
+jupyterlab-server==1.2.0
 jupyterlab_hdf==0.5.1
 jupyterthemes==0.20.0
 jupytext==1.10.1