/usr/share/doc/libkrb5-26-heimdal/changelog.Debian.gz is in libkrb5-26-heimdal 7.5.0+dfsg-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libkrb5-26-heimdal/../libroken18-heimdal/changelog.Debian.gz