jupyterlab: Use jupyterlab-server < 2.11 #33607
Description
Versions of jupyterlab-server >= 2.11 require jinja2 >= 3, which is incompatible. https://github.com/jupyter-server/jupyter_server/blob/main/CHANGELOG.md
This leads to errors when creating a new jupyter notebook:
File "/Users/mkoeppe/s/sage/sage-rebasing/worktree-gcc11/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages/notebook/templates/notebook.html", line 115, in block 'header'
{% for exporter in get_frontend_exporters() %}
File "/Users/mkoeppe/s/sage/sage-rebasing/worktree-gcc11/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages/notebook/notebook/handlers.py", line 23, in get_frontend_exporters
from nbconvert.exporters.base import get_export_names, get_exporter
File "/Users/mkoeppe/s/sage/sage-rebasing/worktree-gcc11/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages/nbconvert/__init__.py", line 4, in <module>
from .exporters import *
File "/Users/mkoeppe/s/sage/sage-rebasing/worktree-gcc11/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages/nbconvert/exporters/__init__.py", line 3, in <module>
from .html import HTMLExporter
File "/Users/mkoeppe/s/sage/sage-rebasing/worktree-gcc11/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages/nbconvert/exporters/html.py", line 14, in <module>
from jinja2 import contextfilter
ImportError: cannot import name 'contextfilter' from 'jinja2' (/Users/mkoeppe/s/sage/sage-rebasing/worktree-gcc11/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages/jinja2/__init__.py)
Our upgrade for jinja2 is stuck in #31937, so we set a version bound here.
CC: @egourgoulhon
Component: packages: optional
Author: Matthias Koeppe
Branch/Commit: 09c3fd2
Reviewer: Eric Gourgoulhon
Issue created by migration from https://trac.sagemath.org/ticket/33607