/usr/share/doc/libxml-security-c-dev/changelog.Debian.gz is in libxml-security-c-dev 1.7.3-4build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libxml-security-c-dev/../libxml-security-c17v5/changelog.Debian.gz