Update libera webchat client URL

Libera have made a webchat client available. This change builds on #12127.

Reviewed-by: Matthew Ahrens <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Jonathon Fernyhough <[email protected]>
Closes #12251

Author: jonathonf

.github/ISSUE_TEMPLATE/config.yml

@@ -10,5 +10,5 @@ contact_links:
     url: https://lists.freebsd.org/mailman/listinfo/freebsd-fs
     about: Get community support for OpenZFS on FreeBSD
   - name: OpenZFS on IRC
-    url: https://kiwiirc.com/nextclient/irc.libera.chat/openzfs
+    url: https://web.libera.chat/#openzfs
     about: Use IRC to get community support for OpenZFS