mariadb-upgrade: can't load library 'libexecinfo.so.2.0'

[Matthias Pressfreund]

After upgrading mariadb-server, I usually run mariadb-upgrade.
This time, after upgrading to mariadb-server-10.5.12v1, I got
this:

# mariadb-upgrade
ld.so: mariadb-upgrade: can't load library 'libexecinfo.so.2.0'
Killed

Did I miss something?