Update kotlin monorepo

Author: renovate[bot]

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.0.0-Beta1"
+kotlin = "2.0.0-Beta4"
 ksp = "2.0.0-Beta1-1.0.15"
 coroutines = "1.7.3"
 androidGradlePlugin = "8.2.0"

server/build.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
   kotlin("multiplatform")
-  id("org.jetbrains.kotlin.plugin.spring").version("1.9.20")
-  id("org.jetbrains.kotlin.plugin.serialization").version("1.9.20")
+  id("org.jetbrains.kotlin.plugin.spring").version("1.9.22")
+  id("org.jetbrains.kotlin.plugin.serialization").version("1.9.22")
   id("org.springframework.boot").version("3.1.4")
   //id("com.google.cloud.tools.appengine").version("2.4.2")
 }