/usr/lib/libgucharmap_2_90.so.7 is in libgucharmap-2-90-7 1:3.10.1-0ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libgucharmap_2_90.so.7.0.0
/usr/lib/libgucharmap_2_90.so.7.0.0