Bump org.jetbrains.kotlin.jvm from 2.3.20 to 2.3.21

Bumps [org.jetbrains.kotlin.jvm](https://github.com/JetBrains/kotlin) from 2.3.20 to 2.3.21.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.3.20...v2.3.21)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin.jvm
  dependency-version: 2.3.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ changelog = "2.5.0"
 intelliJPlatform = "2.14.0"
 junitPlatformLauncher= "6.0.3"
 jupiter = "6.0.3"
-kotlin = "2.3.20"
+kotlin = "2.3.21"
 mockk = "1.14.9"
 kover = "0.9.8"
 ktlint = "14.2.0"