chore(release): v3.12.0 (#157)

Co-authored-by: github-actions <release@getstream.io>

Author: github-actions[bot]

lib/stream-chat/version.rb

@@ -2,5 +2,5 @@
 # frozen_string_literal: true
 
 module StreamChat
-  VERSION = '3.11.0'
+  VERSION = '3.12.0'
 end