leapp RHEL 8 to RHEL 9 fails when dovecot is installed

Issue

Booting into the leapp upgrade kernel, the system enters emergency mode and fails to continue.

[ 4223.460993] localhost upgrade[686]: ============================================================
[ 4223.460993] localhost upgrade[686]:                            ERRORS
[ 4223.460993] localhost upgrade[686]: ============================================================
[ 4223.460993] localhost upgrade[686]: 2023-01-30 14:54:30.480535 [ERROR] Actor: dnf_upgrade_transaction
[ 4223.460993] localhost upgrade[686]: Message: DNF execution failed with non zero exit code.
[ 4223.460993] localhost upgrade[686]: STDOUT:
<snip>
[  264.561448] localhost upgrade[1570]:  dovecot                                      x86_64  1:2.3.16-3.el9             
[ 2201.894350] localhost upgrade[1570]:   Running scriptlet: dovecot-1:2.3.16-3.el9.x86_64                    1194/2672
[ 2202.146309] localhost upgrade[1570]: error: %prein(dovecot-1:2.3.16-3.el9.x86_64) scriptlet failed, exit status 1
[ 2203.731119] localhost upgrade[1570]: error: dovecot-1:2.3.16-3.el9.x86_64: install failed
[ 2595.464357] localhost upgrade[1570]: error: dovecot-1:2.3.16-3.el8.x86_64: erase skipped
[ 3757.515417] localhost upgrade[1570]:   Verifying        : dovecot-1:2.3.16-3.el9.x86_64                    1856/2672
[ 3758.499058] localhost upgrade[1570]:   Verifying        : dovecot-1:2.3.16-3.el8.x86_64                    1857/2672
[ 4192.494644] localhost upgrade[1570]:   dovecot-1:2.3.16-3.el8.x86_64          dovecot-1:2.3.16-3.el9.x86_64
[ 4224.235862] localhost upgrade[686]:  dovecot                                      x86_64  1:2.3.16-3.el9              
[ 4227.573046] localhost upgrade[686]:   Running scriptlet: dovecot-1:2.3.16-3.el9.x86_64                    1194/2672
[ 4227.573046] localhost upgrade[686]: error: %prein(dovecot-1:2.3.16-3.el9.x86_64) scriptlet failed, exit status 1
[ 4227.573046] localhost upgrade[686]: error: dovecot-1:2.3.16-3.el9.x86_64: install failed
[ 4227.730017] localhost upgrade[686]: error: dovecot-1:2.3.16-3.el8.x86_64: erase skipped
[ 4230.453382] localhost upgrade[686]:   Verifying        : dovecot-1:2.3.16-3.el9.x86_64                    1856/2672
[ 4230.453382] localhost upgrade[686]:   Verifying        : dovecot-1:2.3.16-3.el8.x86_64                    1857/2672
<snip>
[ 4231.617762] localhost upgrade[686]: Failed:
[ 4231.617762] localhost upgrade[686]:   dovecot-1:2.3.16-3.el8.x86_64          dovecot-1:2.3.16-3.el9.x86_64
[ 4231.617762] localhost upgrade[686]: Error in PREIN scriptlet in rpm package dovecot