Bump plugin.serialization from 2.3.21 to 2.4.0 (#41)

Bumps [plugin.serialization](https://github.com/JetBrains/kotlin) from 2.3.21 to 2.4.0.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.3.21...v2.4.0)

---
updated-dependencies:
- dependency-name: plugin.serialization
  dependency-version: 2.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

build.gradle.kts

@@ -4,7 +4,7 @@ import com.vanniktech.maven.publish.SourcesJar
 
 plugins {
     kotlin("jvm") version "2.3.21"
-    kotlin("plugin.serialization") version "2.3.21"
+    kotlin("plugin.serialization") version "2.4.0"
     id("com.vanniktech.maven.publish") version "0.36.0"
     id("signing")
 }