Update CHANGELOG.md

Author: milaGGL

firebase-firestore/CHANGELOG.md

@@ -1,5 +1,6 @@
 # Unreleased
 * [fixed] Implement equals method on Filter class. [#5210](//github.com/firebase/firebase-android-sdk/issues/5210)
+* [feature] Added support for multiple inequality in compound queries.
 
 # 24.7.0
 * [feature] Expose MultiDb support in API. [#4015](//github.com/firebase/firebase-android-sdk/issues/4015)