Replace link to gopass on website with ripasso

[Alexander Kjäll]

Hi

Under the `Compatible Clients` section on the webpage there is a link
to gopass ( https://github.com/cortex/gopass#readme ).

The gopass project has been terminated, and we have done a rewrite of
the client in rust here: https://github.com/cortex/ripasso . The new
project is named ripasso.

Would it be possible to update the compatible clients section to reflect this?

best regards
Alexander Kjäll