build(deps): bump org.jetbrains.kotlin.jvm from 2.1.20 to 2.1.21

Bumps [org.jetbrains.kotlin.jvm](https://github.com/JetBrains/kotlin) from 2.1.20 to 2.1.21.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.1.20...v2.1.21)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin.jvm
  dependency-version: 2.1.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -6,6 +6,6 @@
 [libraries]
 
 [plugins]
-kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version = "2.1.20" }
+kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version = "2.1.21" }
 shadow = { id = "com.gradleup.shadow", version = "9.0.0-beta15" }
 binaryCompatibility = { id ="org.jetbrains.kotlinx.binary-compatibility-validator", version = "0.17.0" }