Tutorial notebooks errors are not picked up by the CI

Every notebook tutorial seem to fail with the same error and this error is not properly picked up as the jobs still pass

https://gitlab.eclipse.org/eclipse/aidge/aidge/-/jobs/420897

https://gitlab.eclipse.org/eclipse/aidge/aidge/-/jobs/420898

https://gitlab.eclipse.org/eclipse/aidge/aidge/-/jobs/420899

https://gitlab.eclipse.org/eclipse/aidge/aidge/-/jobs/420896