Just leave them because that’s not going to hurt your site in any way. In this case, what new GSC is reporting is what’s happening with your site and giving you some information to improve your site. They are blocked by the robots.txt file and the Google bot respects robots.txt and does not crawl those pages but they will be indexed in a scenario when those URLs could be linked to from other pages on your site. In this situation Google will index if they are linked to from external url source as well. Better to click the "Fix Coverage issues".