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]>

oslonokkelen-keychain-push-cli/build.gradle.kts

@@ -8,7 +8,7 @@ plugins {
     application
     idea
 
-    kotlin("plugin.serialization") version "2.0.20"
+    kotlin("plugin.serialization") version "2.1.0"
     id("com.github.johnrengelman.shadow") version "8.1.1"
     id("org.graalvm.buildtools.native") version "0.10.3"
     id("org.jetbrains.kotlin.jvm")