Bump jvm from 2.0.20 to 2.0.21

Bumps [jvm](https://github.com/JetBrains/kotlin) from 2.0.20 to 2.0.21.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v2.0.21/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.20...v2.0.21)

---
updated-dependencies:
- dependency-name: jvm
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle.kts

@@ -13,7 +13,7 @@ buildscript {
 }
 
 plugins {
-  kotlin("jvm") version "2.0.20"
+  kotlin("jvm") version "2.0.21"
   id("org.jmailen.kotlinter") version "4.4.1"
   id("com.github.node-gradle.node") version "7.1.0"
   id("com.github.johnrengelman.shadow") version "8.1.1"