chore: Kotlin 1.9 update

Author: jkasten2

Examples/OneSignalDemo/app/build.gradle

@@ -64,6 +64,10 @@ android {
         }
     }
 
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
     // Forced downgrade to Java 1.8 for compiling the application due to Android N error when building
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8

OneSignalSDK/build.gradle

@@ -14,7 +14,7 @@ buildscript {
         huaweiAgconnectVersion = '1.9.1.304'
         huaweiHMSPushVersion = '6.3.0.304'
         huaweiHMSLocationVersion = '4.0.0.300'
-        kotlinVersion = '1.7.10'
+        kotlinVersion = '1.9.25'
         coroutinesVersion = '1.7.3'
         kotestVersion = '5.8.0'
         ioMockVersion = '1.13.2'

OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/registration/impl/PushRegistratorHMS.kt

@@ -47,7 +47,6 @@ internal class PushRegistratorHMS(
         return result!!
     }
 
-    @Synchronized
     @Throws(ApiException::class)
     private suspend fun getHMSTokenTask(context: Context): IPushRegistrator.RegisterResult {
         // Check required to prevent AGConnectServicesConfig or HmsInstanceId used below