Update Kotlin

Author: renovate[bot]

gradle/libs.versions.toml

@@ -33,9 +33,9 @@ jellyfin-sdk = "1.6.3"
 koin = "4.0.1"
 koin-compose = "4.0.1"
 kotest = "5.9.1"
-kotlin = "2.0.21"
-kotlinx-coroutines = "1.9.0"
-kotlinx-serialization = "1.7.3"
+kotlin = "2.1.0"
+kotlinx-coroutines = "1.10.1"
+kotlinx-serialization = "1.8.0"
 markwon = "4.6.2"
 mockk = "1.13.14"
 slf4j-timber = "0.0.4"