Latest Vorta version (0.7.8.) does not launch on Arch based distro with actual python-tzlocal version updated to 4.0.1.

To reproduce:

1. Install vorta from AUR (vorta-git has the same issue at the moment)
2. open a terminal and run "vorta"
3. you'll get an output ending with wrong required version of python-tzlocal

Workaround:
The actual version of python-tzlocal is 4.0.1-1.
Downgrade to 2.1 and vorta can be launched again.