Merge pull request #1304 from jakob-keller/jupyterhub_1.4.1

Update JupyterHub to 1.4.1 and JupyterLab to 3.0.15

Author: romainx

base-notebook/Dockerfile

@@ -132,8 +132,8 @@ RUN wget --quiet "https://github.com/conda-forge/miniforge/releases/download/${m
 # files across image layers when the permissions change
 RUN conda install --quiet --yes \
     'notebook=6.3.0' \
-    'jupyterhub=1.4.0' \
-    'jupyterlab=3.0.14' && \
+    'jupyterhub=1.4.1' \
+    'jupyterlab=3.0.15' && \
     conda clean --all -f -y && \
     npm cache clean --force && \
     jupyter notebook --generate-config && \