Yes, it takes a while for Softaculous to package new versions of software, and for our installation to fetch the latest software versions from Softaculous. The new version of WordPress should be thee within a week.
Alternatively, you can attempt to do a manual upgrade. The official WordPress support pages also provide instructions for a manual update:
I’ve upload wp-admin and wp-includes, both via file manager or via ftp upload. Via file manager can not extract zip file. And ftp upload i’m getting error and at last I’ve (unfortunely) remove my old wordpress and installing a fersh new one that still in 5.4 version.
So till this day we don’t have solving any problem about this matter.