Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.8.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -11,7 +11,7 @@ publish = "0.30.0"
 api-validator = "0.17.0"
 atomicfu = "0.27.0"
 androidx-activity-compose = "1.10.0"
-kotlinx-serialization-json = "1.8.0"
+kotlinx-serialization-json = "1.8.1"
 kotlinx-coroutines = "1.10.1"
 detekt = "1.23.8"