update agp and libraries

* agp 8.1.0 -> 8.1.2
* ktor 2.3.2 -> 2.3.4
* kotlinx-serialization-json 1.5.1 -> 1.6.0

build.gradle

@@ -1,14 +1,14 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
     ext.kotlin_version = "1.8.22"
-    ext.ktor_version = "2.3.2"
+    ext.ktor_version = "2.3.4"
     ext.exo_version = "2.18.7"
     repositories {
         google()
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.1.0'
+        classpath 'com.android.tools.build:gradle:8.1.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong