Update plugin org.jetbrains.kotlin.jvm to v2.0.20 (#8)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

build.gradle.kts

@@ -1,5 +1,5 @@
 plugins {
-	kotlin("jvm") version "2.0.10"
+	kotlin("jvm") version "2.0.20"
 	kotlin("plugin.spring") version "1.9.24"
 	id("org.springframework.boot") version "3.3.3"
 	id("io.spring.dependency-management") version "1.1.6"