/usr/share/menu/light-locker-settings is in light-locker-settings 1.5.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | ?package(light-locker-settings):needs="X11" section="Applications/System/Security"\
title="light-locker-settings" command="light-locker-settings"
|