please see the last comment in that bug:
julia-1.4.2-2.fc32 has been pushed to the Fedora 32 testing repository.
You can Enabling the updates-testing repositories temporarily as described there:
https://fedoraproject.org/wiki/QA:Updates_Testing
update it:
sudo dnf update julia --enablerepo=updates-testing,updates-testing-modular
or if you would like to install :
sudo dnf install julia --enablerepo=updates-testing,updates-testing-modular
I forgot to mention you can help 
providing a good pakage karma:
Regards.,