Update Changelog

Author: markushi

CHANGELOG.md

@@ -1,9 +1,13 @@
 # Changelog
 
-## 8.13.3
+## Unreleased
+
+### Fixes
 
 - Fix Session Replay masking for newer versions of Jetpack Compose (1.8+) ([#4485](https://github.com/getsentry/sentry-java/pull/4485))
 
+## 8.13.3
+
 ### Fixes
 
 - Send UI Profiling app start chunk when it finishes ([#4423](https://github.com/getsentry/sentry-java/pull/4423))