Add config for riseup.net (#368)

share/domains.csv

@@ -226,6 +226,7 @@ protonmail.com,127.0.0.1,1143,127.0.0.1,1025
 rape.lol,mail.cock.li,993,mail.cock.li,587
 redchan.it,mail.cock.li,993,mail.cock.li,587
 resch.pw,mail.resch.pw,993,mail.resch.pw,587
+riseup.net,mail.riseup.net,993,mail.riseup.net,465
 runbox.com,mail.runbox.com,993,mail.runbox.com,587
 rwth-aachen.de,mail.rwth-aachen.de,993,mail.rwth-aachen.de,587
 sapo.pt,imap.sapo.pt,993,smtp.sapo.pt,587