Bump org.jetbrains.kotlin.jvm from 1.9.10 to 1.9.21

Bumps [org.jetbrains.kotlin.jvm](https://github.com/JetBrains/kotlin) from 1.9.10 to 1.9.21.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v1.9.10...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] <support@github.com>

gradle/libs.versions.toml

@@ -3,7 +3,7 @@
 annotations = "24.1.0"
 
 # plugins
-kotlin = "1.9.10"
+kotlin = "1.9.21"
 changelog = "2.2.0"
 gradleIntelliJPlugin = "1.16.0"
 qodana = "0.1.13"