Merge pull request #60954 from nextcloud/carl/IBroadcastEvent

chore: Deprecate IBroadcastEvent

Author: tobiasKaminsky

lib/public/Broadcast/Events/IBroadcastEvent.php

@@ -13,6 +13,7 @@
 
 /**
  * @since 18.0.0
+ * @deprecated 35.0.0 Not used
  */
 interface IBroadcastEvent {
 	/**