update to Kotlin 2

Change-Id: Ib2dc94873166a91703cc5d9355221af25f616dae

jami-android/build.gradle.kts

 plugins {
-    id("com.google.devtools.ksp") version "1.9.23-1.0.19" apply false
+    id("com.google.devtools.ksp") version "2.0.21-1.0.26" apply false
 }
 
 buildscript {
@@ -9,7 +9,7 @@ buildscript {
         mavenCentral()
     }
 
-    val kotlin_version by extra { "1.9.23" }
+    val kotlin_version by extra { "2.0.21" }
     val hilt_version by extra { "2.51.1" }
 
     dependencies {

jami-android/gradle.properties

@@ -4,4 +4,6 @@ android.useAndroidX=true
 android.enableJetifier=false
 android.nonTransitiveRClass=true
 android.nonFinalResIds=false
+org.gradle.configuration-cache=true
+ksp.useKSP2=false
 android.native.buildOutput=verbose