libxml2-tools from M17N:l10n.opensuse.org:Backports-2022.11 project
Select Your Operating System
Add repository and install manually
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/M17N:l10n.opensuse.org:Backports-2022.11/15.4/M17N:l10n.opensuse.org:Backports-2022.11.repo zypper refresh zypper install libxml2-tools