You just need to wait for the next compose. You can see the composes here https://pdc.fedoraproject.org/compose/ Right now latest compose for EPEL8 updates is https://pdc.fedoraproject.org/compose/18349/ Which was done on 2022-07-25 00:21:59 i.e. shortly before this update was pushed to stable. So you need to wait for the next compose. It may take a day or two.
@pbrobinson python2-abrt python2-abrt-addon are now weak deps (Recommends) That is because F28 still contains python2 so those packages are useful. You can either set weak_deps to 0 to do: dnf install
abrt -x python2-abrt -x python2-abrt-addon and you will have only python3 installation.