CHANGELOG.md: update PR number

Author: dconeybe

firebase-dataconnect/CHANGELOG.md

@@ -7,7 +7,7 @@
 * [feature] Added `AnyValue` to support the `Any` custom GraphQL scalar type.
   ([#6285](https://github.com/firebase/firebase-android-sdk/pull/6285))
 * [feature] Added `OrderDirection` enum support.
-  ([#NNNN](https://github.com/firebase/firebase-android-sdk/pull/NNNN))
+  ([#6307](https://github.com/firebase/firebase-android-sdk/pull/6307))
 * [feature] Added ability to specify `SerializersModule` when serializing.
   ([#6297](https://github.com/firebase/firebase-android-sdk/pull/6297))
 * [feature] Added `CallerSdkType`, which enables tracking of the generated SDK usage.