/usr/lib/x86_64-linux-gnu/libcolamd.so is in libsuitesparse-dev 1:4.2.1-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libcolamd.so.2.8.0
/usr/lib/x86_64-linux-gnu/libcolamd.so.2.8.0