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

@@ -1,7 +1,7 @@
 import java.text.SimpleDateFormat
 
 plugins {
-    id "org.jetbrains.kotlin.jvm" version "1.9.20" apply false
+    id "org.jetbrains.kotlin.jvm" version "1.9.21" apply false
     id("org.jetbrains.dokka") version "1.9.10"
     id "org.sonarqube" version "4.4.1.3373"
     id "com.github.ben-manes.versions" version "0.50.0"