There are only a few packages left which depend on readline5. I filed bugs for them which all have a proposed solution and only need to be applied by the package maintainers.
#695875 (xfsprogs) #953006 (dbacl, will be autoremoved on 6 Aug anyway) #966143 (dvbstreamer) #966149 (reiser4progs) #966152 (lvm2) Additionally, mariadb-10.3 depends on readline5. However, mariadb-10.4 already switched to libedit, so this should be resolved with the next mariadb transition.