build(deps): bump org.jetbrains.kotlin:kotlin-gradle-plugin

Bumps [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin) from 1.9.20 to 2.1.0.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.20...v2.1.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

gradle/libs.versions.toml

@@ -16,7 +16,7 @@ kotlin = "2.0.21"
 kotlinxCoroutines = "1.9.0"
 lifecycleRuntimeKtx = "2.8.7"
 mockito = "5.14.2"
-kotlinGradlePlugin = "1.9.20"
+kotlinGradlePlugin = "2.1.0"
 mockitoInline = "5.2.0"
 mockitoKotlin = "2.2.0"
 secretsGradlePlugin = "2.0.1"