/usr/lib/x86_64-linux-gnu/libxmlezout.so is in libxmlezout3-dev 1.06.1-7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libxmlezout.so.2
/usr/lib/x86_64-linux-gnu/libxmlezout.so.2