Use the AUR package maintained by @bjo81.
$ yaourt -S vorta
To install a .deb package including dependencies:
$ apt install ./vorta-1.2.3.deb
To install a .rpm package including dependencies:
$ yum localinstall ./vorta-1.2.3.rpm
To install a .rpm package including dependencies:
$ dnf install ./vorta-1.2.3.rpm