chore(deps): update kotlin to v2.3.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -11,7 +11,7 @@ graphstream = "2.0"
 junit = "6.0.1"
 konf = "1.1.2"
 kotest = "6.0.7"
-kotlin = "2.2.21"
+kotlin = "2.3.0"
 kotlinx-coroutines = "1.10.2"
 ktor = "3.3.3"
 mockito = "5.21.0"