Reflect the IRC migration to libera.chat

Bug: T283707

Author: Silvan-WMDE

.travis.yml

@@ -14,8 +14,8 @@ script:
 notifications:
   irc:
     channels:
-      - "chat.freenode.net#wikidata-feed"
-    on_success: never
+      - "irc.libera.chat#wikidata-feed"
+    on_success: change
     on_failure: always
     template:
       - "%{repository}/%{branch}/%{commit} : %{author} %{message} %{build_url}"