upgrade deps

app/android/build.gradle

@@ -5,7 +5,7 @@ ext {
 }
 
 buildscript {
-    ext.kotlin_version = '1.9.22'
+    ext.kotlin_version = '2.1.20'
 }
 
 allprojects {

app/android/settings.gradle

@@ -18,8 +18,8 @@ pluginManagement {
 
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version "8.7.0" apply false
-    id "org.jetbrains.kotlin.android" version "1.9.22" apply false
+    id "com.android.application" version '8.9.1' apply false
+    id "org.jetbrains.kotlin.android" version "2.1.20" apply false
 }
 
 include ":app"