The libutf8proc package prior to version 2.1.1-3 had an incorrect soname link. This has been fixed in 2.1.1-3, so the upgrade will need to overwrite the untracked soname link created by ldconfig. If you get an error
libutf8proc: /usr/lib/libutf8proc.so.2 exists in filesystem
when updating, use
pacman -Suy --overwrite usr/lib/libutf8proc.so.2
to perform the upgrade.