chore(deps): Update dependency org.jetbrains.kotlin.jvm:org.jetbrains.kotlin.jvm.gradle.plugin to v2.1.20

Author: renovate[bot]

gradle/libs.versions.toml

@@ -18,7 +18,7 @@ immutables = "2.10.1"
 guice = "7.0.0"
 
 # kotlin
-kotlin = "2.0.20"
+kotlin = "2.1.20"
 dokka = "1.9.20"
 coroutines = "1.8.1"
 ktlint = "0.50.0"