EL8 is in it's Security Only update phase.
When running update under EL8 and after should be:
dnf --refresh update
In other words, if there is no security fix to a package, then you won't see any updates.
EL8 covers RHEL 8, AlmaLinux 8, Rocky 8, any EL8 clone.
One reason why we've only brought EL9 servers online for awhile, even with the small amount of CWP bugs.
Unfortunately one of them is resource control. They changed how it worked from under EL7/EL8.
But for out clients, that's not a big deal.
Neither is anything under PHP 7.4