/usr/lib/x86_64-linux-gnu/libavro.so is in libavro-dev 1.8.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libavro.so.23
/usr/lib/x86_64-linux-gnu/libavro.so.23