exclude DirectionsRouteResponse from r8 (#11645)

GitOrigin-RevId: 170c75d0b235887f30b7d53a27280794c3a213b1

Author: vadzim-vys

navigator/proguard-rules.pro

@@ -3,4 +3,5 @@
 # Refs https://github.com/mapbox/mapbox-bindgen/issues/27
 -keep class com.google.gson.** {*;}
 -keep class com.mapbox.bindgen.** {*;}
--keep class com.mapbox.common.** {*;}
+-keep class com.mapbox.common.** {*;}
+-keep class com.mapbox.directions.route.DirectionsRouteResponse { *; }