/usr/lib/x86_64-linux-gnu/libpcre2-16.so is in libpcre2-dev 10.21-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpcre2-16.so.0.3.0
/usr/lib/x86_64-linux-gnu/libpcre2-16.so.0.3.0