Update CHANGELOG with unreleased enhancements (#3347)

Author: buenaflor

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Enhancements
+
+- Flush logs if client/hub/sdk is closed ([#3335](https://github.com/getsentry/sentry-dart/pull/3335)
+
 ## 9.8.0-beta.1
 
 ### Fixes
@@ -10,7 +16,6 @@
 
 - Refactor `captureReplay` and `setReplayConfig` to use FFI/JNI ([#3318](https://github.com/getsentry/sentry-dart/pull/3318))
 - Refactor `init` to use FFI/JNI ([#3324](https://github.com/getsentry/sentry-dart/pull/3324))
-- Flush logs if client/hub/sdk is closed ([#3335](https://github.com/getsentry/sentry-dart/pull/3335))
 
 ## 9.8.0