/lib/x86_64-linux-gnu/libpcre.so.3 is in libpcre3 1:8.31-2ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/libpcre.so.3.13.1
/lib/x86_64-linux-gnu/libpcre.so.3.13.1