KTL-3702 Updated Kotlin to 2.3.0-Beta2

Author: dkrasnoff

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.3.0-dev-9673"
+kotlin = "2.3.0-Beta2"
 spring-boot = "3.5.7"
 spring-dependency-managment = "1.1.7"
 springdoc = "2.8.13"