Update CHANGELOG.md

Co-authored-by: LucasZF <lucas-zimerman1@hotmail.com>

Author: krystofwoldrich

CHANGELOG.md

@@ -18,7 +18,7 @@
 ### Major Changes
 
 - `Sentry.captureUserFeedback` removed, use `Sentry.captureFeedback` instead ([#4855](https://github.com/getsentry/sentry-react-native/pull/4855))
-- Use global `TextEncoder` when available ([#4874](https://github.com/getsentry/sentry-react-native/pull/4874))
+- Use global `TextEncoder` (available with Hermes in React Native 0.74 or higher) to greatly improve envelope encoding performance. ([#4874](https://github.com/getsentry/sentry-react-native/pull/4874))
 
 ### Changes