/usr/lib/x86_64-linux-gnu/libvorbisenc.so is in libvorbis-dev 1.3.5-4.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2.0.11
/usr/lib/x86_64-linux-gnu/libvorbisenc.so.2.0.11