/usr/lib/x86_64-linux-gnu/libpgf.so is in libpgf-dev 6.14.12-3.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpgf.so.6.0.11
/usr/lib/x86_64-linux-gnu/libpgf.so.6.0.11