update Android Gradle plugin to 9.0.0

Author: thestinger

app/build.gradle.kts

@@ -10,7 +10,6 @@ if (useKeystoreProperties) {
 
 plugins {
     id("com.android.application")
-    kotlin("android")
 }
 
 java {

build.gradle.kts

@@ -1,6 +1,12 @@
 plugins {
-    id("com.android.application") version "8.13.1" apply false
-    id("org.jetbrains.kotlin.android") version "2.3.0" apply false
+    id("com.android.application") version "9.0.0" apply false
+}
+
+buildscript {
+    dependencies {
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:2.3.0")
+        classpath("com.google.devtools.ksp:symbol-processing-gradle-plugin:2.3.5")
+    }
 }
 
 allprojects {