shadow from security:SELinux project
Select Your Operating System
Add repository and install manually
For 15.7 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:SELinux/15.7/security:SELinux.repo zypper refresh zypper install shadow
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:SELinux/15.6/security:SELinux.repo zypper refresh zypper install shadow