/usr/lib/x86_64-linux-gnu/libvamp-sdk.so is in vamp-plugin-sdk 2.6~repack0-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libvamp-sdk.so.2.5.0
/usr/lib/x86_64-linux-gnu/libvamp-sdk.so.2.5.0