Update plugin org.jetbrains.kotlin.jvm to v2.1.20

Author: renovate[bot]

build-support/build.gradle.kts

@@ -23,7 +23,7 @@ buildscript {
 plugins {
   `kotlin-dsl`
   `java-gradle-plugin`
-  kotlin("jvm") version "2.0.21"
+  kotlin("jvm") version "2.1.20"
 }
 
 repositories {