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

Bumps [org.jetbrains.kotlinx:kotlinx-serialization-json](https://github.com/Kotlin/kotlinx.serialization) from 1.6.2 to 1.6.3.
- [Release notes](https://github.com/Kotlin/kotlinx.serialization/releases)
- [Changelog](https://github.com/Kotlin/kotlinx.serialization/blob/master/CHANGELOG.md)
- [Commits](Kotlin/kotlinx.serialization@v1.6.2...v1.6.3)

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

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

gradle/libs.versions.toml

@@ -7,7 +7,7 @@ springboot = "3.2.3"
 springDependencyManagement = "1.1.4"
 spotless = "6.25.0"
 java = "17"
-kotlinxSerialization = "1.6.2"
+kotlinxSerialization = "1.6.3"
 oauth2OidcSdk = "11.10.1"
 presentationExchange = "0.2.0-SNAPSHOT"
 ktlintVersion = "0.50.0"