Examples: Android: update to AGP 9.2.0 to support Gradle 9.6.0.

examples/example_android_opengl3/android/app/build.gradle

@@ -1,6 +1,5 @@
 plugins {
     alias(libs.plugins.android.application)
-    alias(libs.plugins.kotlin.android)
 }
 
 android {
@@ -25,9 +24,6 @@ android {
         sourceCompatibility JavaVersion.VERSION_11
         targetCompatibility JavaVersion.VERSION_11
     }
-    kotlinOptions {
-        jvmTarget = '11'
-    }
     externalNativeBuild {
         cmake {
             path file('../../CMakeLists.txt')

examples/example_android_opengl3/android/gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
-agp = "8.12.0"
-kotlin = "2.0.21"
+agp = "9.2.0"
+kotlin = "2.3.21"
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }