deps(deps): bump org.jetbrains.kotlinx:kotlinx-serialization-json

Bumps the kotlin-updates group with 1 update: [org.jetbrains.kotlinx:kotlinx-serialization-json](https://github.com/Kotlin/kotlinx.serialization).


Updates `org.jetbrains.kotlinx:kotlinx-serialization-json` from 1.6.2 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](https://github.com/Kotlin/kotlinx.serialization/compare/v1.6.2...v1.9.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlinx:kotlinx-serialization-json
  dependency-version: 1.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: kotlin-updates
...

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

build.gradle.kts

@@ -18,7 +18,7 @@ kotlin {
     sourceSets {
         commonMain {
             dependencies {
-                implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.2")
+                implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.9.0")
             }
         }