[ios, macos] Changelog entry for network request priority change (#15950

)

platform/ios/CHANGELOG.md

@@ -4,6 +4,7 @@ Mapbox welcomes participation and contributions from everyone. Please read [CONT
 
 ## master
 * Added support for [image expression](https://docs.mapbox.com/mapbox-gl-js/style-spec/#expressions-types-image) in core library. Runtime APIs for image expression will be implemented separately. ([#15877](https://github.com/mapbox/mapbox-gl-native/pull/15877))
+* Make network requests for expired resources lower priority than requests for new resources. ([#15950](https://github.com/mapbox/mapbox-gl-native/pull/15950))
 
 ### Other changes
 * Convert GeoJSON features to tiles for the loaded source description in a background thread and thus unblock the UI thread ([#15885](https://github.com/mapbox/mapbox-gl-native/pull/15885))

platform/macos/CHANGELOG.md

@@ -20,6 +20,7 @@
 * Added an `-[MGLMapSnapshotter startWithOverlayHandler:completionHandler:]` method to provide the snapshot's current `CGContext` in order to perform custom drawing on `MGLMapSnapShot` objects. ([#15530](https://github.com/mapbox/mapbox-gl-native/pull/15530))
 * Fixed an issue that `maxzoom` in style `Sources` option was ignored when URL resource is provided. It may cause problems such as extra tiles downloading at higher zoom level than `maxzoom`, or problems that wrong setting of `overscaledZ` in `OverscaledTileID` that will be passed to `SymbolLayout`, leading wrong rendering appearance. ([#15581](https://github.com/mapbox/mapbox-gl-native/pull/15581))
 * Fixed a crash when `-[MGLOfflinePack invalidate]` is called on different threads. ([#15582](https://github.com/mapbox/mapbox-gl-native/pull/15582))
+* Make network requests for expired resources lower priority than requests for new resources. ([#15950](https://github.com/mapbox/mapbox-gl-native/pull/15950))
 
 ### Styles and rendering