Update koin to v4.2.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -8,7 +8,7 @@ koog = "0.5.1"
 exposed = "1.2.0"
 h2 = "2.4.240"
 mongodb = "4.11.5"
-koin = "4.2.0"
+koin = "4.2.1"
 kotlinx-rpc = "0.10.2"
 kotlinx-rpc-grpc = "0.11.0-grpc-187"
 kotest = "6.0.5"