Bump plugin.serialization from 2.0.20 to 2.1.0

Bumps [plugin.serialization](https://github.com/JetBrains/kotlin) from 2.0.20 to 2.1.0.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v2.1.0/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.20...v2.1.0)

---
updated-dependencies:
- dependency-name: plugin.serialization
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle.kts

@@ -10,7 +10,7 @@ plugins {
   alias(libs.plugins.changelog) // Gradle Changelog Plugin
   alias(libs.plugins.qodana) // Gradle Qodana Plugin
   alias(libs.plugins.kover) // Gradle Kover Plugin
-  kotlin("plugin.serialization") version "2.0.20"
+  kotlin("plugin.serialization") version "2.1.0"
 }
 
 group = providers.gradleProperty("pluginGroup").get()