move irc to libera

support/index.html

@@ -67,8 +67,8 @@ <h3>Archives</h3>
 
         <h2>IRC chat</h2>
 
-        <p>There is a Roundcube chatroom registered at freenode: <a href="irc://irc.freenode.net/roundcube" class="rc-icon irc-link" target="_blank">#roundcube on irc.freenode.net</a>.
-        Some of the developers and experienced users provide helpful support there. Feel free to join us, be it to ask a question or to just hang out.</p>
+        <p>Join #roundcube on <a href="ircs://irc.libera.chat:6697" class="rc-icon irc-link" target="_blank">libera.chat</a>
+        to ask a question or to just hang out with other Roundcube users.</p>
     </div>
 
     <div class="col-lg-4">