/usr/lib/x86_64-linux-gnu/libpsl.so is in libpsl-dev 0.19.1-5build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpsl.so.5.2.0
/usr/lib/x86_64-linux-gnu/libpsl.so.5.2.0