manually specify okhttp3 version - use something newer with less api warnings

app/build.gradle

@@ -123,6 +123,9 @@ dependencies {
     // mapbox
     implementation 'com.mapbox.mapboxsdk:mapbox-android-sdk:9.1.0'
 
+    // mapbox specifies a really old version of okhttp3 which causes lots of API warnings.  trying a newer version
+    implementation 'com.squareup.okhttp3:okhttp:4.5.0'
+
     // location services
     implementation 'com.google.android.gms:play-services-location:17.0.0'