chore(deps): update plugin org.jetbrains.kotlin.jvm to v2.0.21 (#2755)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| org.jetbrains.kotlin.jvm | `2.0.0` -> `2.0.21` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/org.jetbrains.kotlin.jvm/2.0.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/org.jetbrains.kotlin.jvm/2.0.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/org.jetbrains.kotlin.jvm/2.0.0/2.0.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/org.jetbrains.kotlin.jvm/2.0.0/2.0.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

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integrations/intellij/build.gradle.kts

@@ -7,7 +7,7 @@ plugins {
     // Java support
     id("java")
     // Kotlin support
-    id("org.jetbrains.kotlin.jvm") version "2.0.0"
+    id("org.jetbrains.kotlin.jvm") version "2.0.21"
     // gradle-intellij-plugin - read more: https://github.com/JetBrains/gradle-intellij-plugin
     id("org.jetbrains.intellij") version "1.17.4"
     // detekt linter - read more: https://detekt.github.io/detekt/gradle.html