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

Bumps [org.jetbrains.kotlinx:kotlinx-serialization-core](https://github.com/Kotlin/kotlinx.serialization) from 1.5.1 to 1.6.0.
- [Release notes](https://github.com/Kotlin/kotlinx.serialization/releases)
- [Changelog](https://github.com/Kotlin/kotlinx.serialization/blob/master/CHANGELOG.md)
- [Commits](Kotlin/kotlinx.serialization@v1.5.1...v1.6.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

gradle/libs.versions.toml

@@ -16,7 +16,7 @@ kord = "0.11.0-SNAPSHOT"
 ksp = "1.9.0-1.0.13"
 ktor = "2.3.3"
 kx-coro = "1.7.3"
-kx-ser = "1.5.1"
+kx-ser = "1.6.0"
 linkie = "1.0.99"
 logback = "1.4.11"
 logback-groovy = "1.14.4"