firebase-dataconnect/CHANGELOG.md entry added

Author: dconeybe

firebase-dataconnect/CHANGELOG.md

@@ -30,6 +30,12 @@
   paired with code generated by version 1.7.0 (or later) of the Data Connect
   emulator.
   ([#6513](https://github.com/firebase/firebase-android-sdk/pull/6513))
+* [feature] JavaTimeLocalDateSerializer and KotlinxDatetimeLocalDateSerializer
+  added, to enable using the standard "local date" classes `java.time.LocalDate`
+  and/or `kotlinx.datetime.LocalDate` instead of the bespoke
+  `com.google.firebase.dataconnect.LocalDate` class for `Date` GraphQL fields
+  and variables.
+  ([#NNNN](https://github.com/firebase/firebase-android-sdk/pull/NNNN))
 
 # 16.0.0-beta02
 * [changed] Updated protobuf dependency to `3.25.5` to fix