dataconnect: CHANGELOG.md: format via spotlessApply (#7343)

Author: dconeybe

firebase-dataconnect/CHANGELOG.md

@@ -2,8 +2,7 @@
 
 - [changed] Ignore unknown fields in response data instead of throwing a
   `DataConnectOperationException` with message "decoding data from the server's response failed: An
-  unknown field for index -3"
-  ([#7314](https://github.com/firebase/firebase-android-sdk/pull/7314))
+  unknown field for index -3" ([#7314](https://github.com/firebase/firebase-android-sdk/pull/7314))
 
 # 17.0.0