Update serialization version

Author: sandwwraith

.teamcity/BuildParams.kt

@@ -11,7 +11,7 @@ object BuildParams {
   const val KOTLINX_COROUTINES_TITLE = KOTLINX_COROUTINES_ID
 
   const val KOTLINX_SERIALIZATION_RELEASE_TAG = "master"
-  const val KOTLINX_SERIALIZATION_RELEASE_LABEL = "v1.8.1"
+  const val KOTLINX_SERIALIZATION_RELEASE_LABEL = "v1.9.0"
   const val KOTLINX_SERIALIZATION_ID = "kotlinx.serialization"
   const val KOTLINX_SERIALIZATION_TITLE = KOTLINX_SERIALIZATION_ID