build(deps): bump kotlinJvm from 2.0.20 to 2.1.21

Bumps `kotlinJvm` from 2.0.20 to 2.1.21.

Updates `org.jetbrains.kotlin:kotlin-test-junit` from 2.0.20 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@v2.0.20...v2.1.21)

Updates `org.jetbrains.kotlin.jvm` from 2.0.20 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@v2.0.20...v2.1.21)

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

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -14,7 +14,7 @@ gson = "2.8.9"
 
 # plugins
 gradleIntelliJPlugin = "2.6.0"
-kotlinJvm = "2.0.20"
+kotlinJvm = "2.1.21"
 
 [libraries]
 openshift-client = { group = "io.fabric8", name = "openshift-client", version.ref = "kubernetes-client" }