That is weird. As I stated above, the subpackage
libreport-python3 hasn't existed since two years ago.
Your second sentence is demonstrably false, I have installed the update on my machine just fine few moments ago.
The way I see it, this is an issue of the initial-setup package, or its maintainer, who should push the updated version to the f30 repo.
I'm sorry, I'm not quite sure I understand the error. I can see that initial-setup 0.3.69 requires
libreport-python3 which is no longer provided by libreport. This error was corrected in version 0.3.73, which is not available for Fedora 30, though. Is that correct?