Bump org.jetbrains.kotlin.jvm from 1.9.20 to 1.9.21

Bumps [org.jetbrains.kotlin.jvm](https://github.com/JetBrains/kotlin) from 1.9.20 to 1.9.21.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.20...v1.9.21)

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

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

build.gradle.kts

@@ -39,7 +39,7 @@ plugins {
   id("com.github.kt3k.coveralls") version "2.12.2"
   id("org.sonarqube") version "4.4.1.3373"
   id("org.jetbrains.qodana") version "0.1.13"
-  id("org.jetbrains.kotlin.jvm") version "1.9.20"
+  id("org.jetbrains.kotlin.jvm") version "1.9.21"
 }
 
 repositories {