Hello.
Fortunately, one of our admins was able to help me referencing: CI/CD coverage is not able to capture coverage generated by pytest-cov (#48613) · Issues · GitLab.org / GitLab FOSS · GitLab
So in the end the regex didn’t fit even though it looks like it would.
The correct regex is:
*TOTAL.*\s+(\d+%)$*
and now it is working 
Thanks!