fix(deps): update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.8.1

Author: renovate[bot]

build.gradle.kts

@@ -29,7 +29,7 @@ repositories {
 
 extra["testcontainersVersion"] = "1.20.4"
 extra["fmodelVersion"] = "3.6.0"
-extra["kotlinxSerializationJson"] = "1.7.3"
+extra["kotlinxSerializationJson"] = "1.8.1"
 extra["kotlinxCollectionsImmutable"] = "0.3.8"
 extra["kotlinLogging"] = "3.0.5"
 extra["kotlinxCoroutinesTest"] = "1.9.0"