fix(deps): update dependency org.jetbrains.kotlin:kotlin-gradle-plugin to v2

Author: renovate[bot]

gradle/libs.versions.toml

@@ -24,7 +24,7 @@ micronaut-logging = "1.5.0"
 
 # Micronaut
 micronaut-gradle-plugin = "4.4.4"
-kotlin = "1.9.25"
+kotlin = "2.1.0"
 
 [libraries]
 # Core