For Mageia Cauldron run the following as root:
dnf config-manager --add-repo https://download.opensuse.org/repositories/home:tarakbumba:mageia-repository/Mageia_Cauldron/home:tarakbumba:mageia-repository.repo
dnf install keepassxc
For Mageia 8 run the following as root:
dnf config-manager --add-repo https://download.opensuse.org/repositories/home:tarakbumba:mageia-repository/Mageia_8/home:tarakbumba:mageia-repository.repo
dnf install keepassxc
For Mageia 7 run the following as root:
dnf config-manager --add-repo https://download.opensuse.org/repositories/home:tarakbumba:mageia-repository/Mageia_7/home:tarakbumba:mageia-repository.repo
dnf install keepassxc