Slight modifications to operators notebooks
Should be dealt with after !77 (closed): solution to the exercises have been updated to follow the last provided solution there.
GitLab upgrade completed. Current version is 18.7.4
https://about.gitlab.com/releases/2025/12/18/gitlab-18-7-released/
Should be dealt with after !77 (closed): solution to the exercises have been updated to follow the last provided solution there.