chore(deps): bump plugin.serialization from 2.0.0 to 2.0.20

Bumps [plugin.serialization](https://github.com/JetBrains/kotlin) from 2.0.0 to 2.0.20.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.0...v2.0.20)

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

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

build.gradle.kts

@@ -5,7 +5,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 plugins {
     kotlin("jvm") version "2.0.20"
     id("org.jetbrains.kotlinx.kover") version "0.7.6"
-    kotlin("plugin.serialization") version "2.0.0"
+    kotlin("plugin.serialization") version "2.0.20"
     `maven-publish`
     signing
     id("io.github.gradle-nexus.publish-plugin") version "2.0.0"