Add CHANGELOG for latency-compensated query fix (#622)
Add CHANGELOG for latency-compensated query fix (#622)

* Add CHANGELOG for latency-compensated query fix

* made 20.2.0

* add issue ref

firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk