Update changelog for 8.6.6 (#565)

* Update changelog for 8.6.6

* Update CHANGELOG.md

Author: Kevin Li

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 Mapbox welcomes participation and contributions from everyone. Please read [`Contributing Guide`](https://github.com/mapbox/mapbox-gl-native/blob/master/CONTRIBUTING.md) to get started.
 
+## 8.6.6 - September 25, 2020
+[Changes](https://github.com/mapbox/mapbox-gl-native-android/compare/android-v8.6.5...android-v8.6.6) since [Mapbox Maps SDK for Android v8.6.5](https://github.com/mapbox/mapbox-gl-native-android/releases/tag/android-v8.6.5):
+### Bug fixes
+ - Fix Style not ready exception in location component ([#563](https://github.com/mapbox/mapbox-gl-native-android/pull/563))
+
 ## 9.5.0-beta.1 - September 14, 2020
 [Changes](https://github.com/mapbox/mapbox-gl-native-android/compare/android-v9.4.0...android-v9.5.0-beta.1) since [Mapbox Maps SDK for Android 9.4.0](https://github.com/mapbox/mapbox-gl-native-android/releases/tag/android-v9.4.0)
 ### Improvements and bug fixes