Update VerifyDeviceRootModule.java

Fix Promise import

Author: dnlsilva

android/src/main/java/com/reactlibrary/VerifyDeviceRootModule.java

@@ -4,6 +4,7 @@
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
 import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.Promise;
 
 import com.scottyab.rootbeer.RootBeer;