CI timeout notebook2 (azimuthal integration)

Main branch: https://gitlab.esrf.fr/loic.huder/juno/-/jobs/242606

I cannot reproduce this locally but it can be reproduced on the virtual machine that runs our CI

denolf@docker-runner-dau-01:~$ sudo docker run -it -v ${HOME}:/output python:3.6 /bin/bash
denolf@docker-runner-dau-01:~$ cd /output
denolf@docker-runner-dau-01:~$ git clone https://gitlab.esrf.fr/loic.huder/juno.git
denolf@docker-runner-dau-01:~$ cd juno
denolf@docker-runner-dau-01:~$ python -m pip install -e .[test]
denolf@docker-runner-dau-01:~$ pytest juno/tests/test_notebooks.py::TestNotebook2WithMask::test_notebook2 -v