libdnf-plugin-txnupd from home:Pharaoh_Atem:DNF_SUSE:MicroOS project

需要 openSUSE Tumbleweed ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:Pharaoh_Atem:DNF_SUSE:MicroOS/openSUSE_Tumbleweed/home:Pharaoh_Atem:DNF_SUSE:MicroOS.repo
zypper refresh
zypper install libdnf-plugin-txnupd