Update changelog

Author: testableapple

CHANGELOG.md

@@ -4,7 +4,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 # Upcoming
 
 ### 🐞 Fixed
-- Fix composer not being locked after the channel was frozen [#000](https://github.com/GetStream/stream-chat-swiftui/pull/000)
+- Fix composer not being locked after the channel was frozen [#1015](https://github.com/GetStream/stream-chat-swiftui/pull/1015)
 
 ### 🔄 Changed