For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:kanku:perl/openSUSE_Tumbleweed/devel:kanku:perl.repo
zypper refresh
zypper install perl-Passwd-Keyring-KDEWallet
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:kanku:perl/openSUSE_Factory_ARM/devel:kanku:perl.repo
zypper refresh
zypper install perl-Passwd-Keyring-KDEWallet
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:kanku:perl/15.4/devel:kanku:perl.repo
zypper refresh
zypper install perl-Passwd-Keyring-KDEWallet