Bump org.jetbrains.kotlinx:kotlinx-serialization-core

Bumps [org.jetbrains.kotlinx:kotlinx-serialization-core](https://github.com/Kotlin/kotlinx.serialization) from 1.7.2 to 1.9.0.
- [Release notes](https://github.com/Kotlin/kotlinx.serialization/releases)
- [Changelog](https://github.com/Kotlin/kotlinx.serialization/blob/master/CHANGELOG.md)
- [Commits](Kotlin/kotlinx.serialization@v1.7.2...v1.9.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlinx:kotlinx-serialization-core
  dependency-version: 1.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -10,7 +10,7 @@ gson = "2.11.0"
 junit = "4.13.2"
 kotlin = "2.0.21"
 kotlinx-coroutines = "1.9.0"
-kotlinx-serialization = "1.7.2"
+kotlinx-serialization = "1.9.0"
 kotlinx-binarycompatibilityvalidator = "0.16.3"
 kotlinx-datetime = "0.6.1"
 kotlinter = "4.4.1"