Upgrade to Kotlin Serialization 1.9.0

See gh-34453

Author: sdeleuze

framework-platform/framework-platform.gradle

@@ -18,7 +18,7 @@ dependencies {
 	api(platform("org.eclipse.jetty:jetty-bom:12.1.0.beta1"))
 	api(platform("org.eclipse.jetty.ee11:jetty-ee11-bom:12.1.0.beta1"))
 	api(platform("org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.10.2"))
-	api(platform("org.jetbrains.kotlinx:kotlinx-serialization-bom:1.8.1"))
+	api(platform("org.jetbrains.kotlinx:kotlinx-serialization-bom:1.9.0"))
 	api(platform("org.junit:junit-bom:5.13.3"))
 	api(platform("org.mockito:mockito-bom:5.18.0"))
 	api(platform("tools.jackson:jackson-bom:3.0.0-rc5"))