/usr/lib/x86_64-linux-gnu/libcupsimage.so is in libcupsimage2-dev 2.2.7-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libcupsimage.so.2
/usr/lib/x86_64-linux-gnu/libcupsimage.so.2