/usr/lib/x86_64-linux-gnu/engines-1.1/libpkcs11.so is in libengine-pkcs11-openssl 0.4.7-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/engines-1.1/pkcs11.so
/usr/lib/x86_64-linux-gnu/engines-1.1/pkcs11.so