/usr/lib/GNUstep/Frameworks/DBusKit.framework/Versions/0/DBusKit is in libdbuskit-dev 0.1.1-2+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/GNUstep/Frameworks/DBusKit.framework/Versions/0/libDBusKit.so