/usr/lib/libakonadiprotocolinternals.so is in libakonadi-dev 1.7.2-0ubuntu1.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libakonadiprotocolinternals.so.1
/usr/lib/libakonadiprotocolinternals.so.1