switch from freenode irc network to libera.chat irc network as freenode is dead

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

.github/ISSUE_TEMPLATE.md

@@ -1,6 +1,6 @@
 # Bug report vs. support request
 If you're unsure of whether your problem is a bug or a configuration error
-* contact us via IRC in #froxlor on freenode
+* contact us via IRC in #froxlor on irc.libera.chat
 * or post a thread in our forum at https://forum.froxlor.org
 
 As a rule of thumb: before reporting an issue

.travis.yml

@@ -55,7 +55,7 @@ script:
   - ant phpunit-no-coverage
 
 notifications:
-  irc: "chat.freenode.net#froxlor"
+  irc: "irc.libera.chat#froxlor"
   webhooks:
     urls:
       - https://webhooks.gitter.im/e/bdf91d1c3f745e51f796

README.md

@@ -28,8 +28,8 @@ You may find help in the following places:
 
 ### IRC
 
-froxlor may be found on freenode.net, channel #froxlor:
-irc://chat.freenode.net/froxlor
+froxlor may be found on libera.chat, channel #froxlor:
+irc://irc.libera.chat/froxlor
 
 ### Forum
 

composer.json

@@ -25,7 +25,7 @@
 		"issues": "https://github.com/Froxlor/Froxlor/issues",
 		"forum": "https://forum.froxlor.org/",
 		"wiki": "https://github.com/Froxlor/Froxlor/wiki",
-		"irc": "irc://chat.freenode.net/froxlor",
+		"irc": "irc://irc.libera.chat/froxlor",
 		"source": "https://github.com/Froxlor/Froxlor",
 		"docs": "https://github.com/Froxlor/Froxlor/wiki"
 	},