Add kdan pixel3 xl to admob test device

src/main/java/com/kdanmobile/admanager/admob/RequestFactory.kt

@@ -8,6 +8,7 @@ class RequestFactory {
     companion object {
         fun create(isPersonalized: Boolean): AdRequest {
             return AdRequest.Builder().apply {
+                addTestDevice("9E5CBFF6A5A91A582ABA54DC3BB5EF04")
                 if (!isPersonalized) {
                     addNetworkExtrasBundle(AdMobAdapter::class.java, Bundle().apply {
                         putString("npa", "1")