Try Java version 21 (#2293)

Author: soywiz

buildSrc/src/main/kotlin/korlibs/korge/gradle/targets/android/Android.kt

@@ -153,9 +153,10 @@ const val ANDROID_DEFAULT_COMPILE_SDK = 33
 const val ANDROID_DEFAULT_TARGET_SDK = 33
 
 //val GRADLE_JAVA_VERSION_STR = "11"
-val GRADLE_JAVA_VERSION_STR = "17"
+val GRADLE_JAVA_VERSION_STR = "21"
 
-val ANDROID_JAVA_VERSION = JavaVersion.VERSION_1_8
+//val ANDROID_JAVA_VERSION = JavaVersion.VERSION_1_8
 //val ANDROID_JAVA_VERSION = JavaVersion.VERSION_11
+val ANDROID_JAVA_VERSION = JavaVersion.VERSION_21
 val ANDROID_JAVA_VERSION_STR = ANDROID_JAVA_VERSION.toString()
 val ANDROID_JVM_TARGET = JvmTarget.fromTarget(ANDROID_JAVA_VERSION_STR)