shadow from security:SELinux project
Select Your Operating System
Add repository and install manually
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:SELinux/15.5/security:SELinux.repo zypper refresh zypper install shadow
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:SELinux/15.4/security:SELinux.repo zypper refresh zypper install shadow