bumped the maps sdk to 9.0.0 (#1305)

Langston Smith · web-flow · commit f00a7d9ab2b8 · 2020-03-01T14:42:03.000-08:00
diff --git a/gradle/dependencies.gradle b/gradle/dependencies.gradle
@@ -11,7 +11,7 @@ ext {
 
             // Mapbox
             mapboxMapPrefix          : 'v8',
-            mapboxMapSdk             : '8.6.2',
+            mapboxMapSdk             : '9.0.0',
             mapboxTurf               : '5.0.0',
             mapboxServices           : '5.0.0',
             mapboxPluginBuilding     : '0.6.0',
