/usr/share/doc/libxkbcommon-x11-dev/changelog.Debian.gz is in libxkbcommon-x11-dev 0.5.0-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libxkbcommon-x11-dev/../libxkbcommon0/changelog.Debian.gz