Update spring core to v6

Author: renovate[bot]

gradle/libs.versions.toml

@@ -13,7 +13,7 @@ jsr250 = "1.0"
 jupiter = "5.14.0"
 mapstruct = "1.4.0.Final"
 mockito = "5.20.0"
-spring = "5.0.0.RELEASE"
+spring = "6.2.12"
 springBoot = "2.7.18"
 springDependencyManagement = "1.1.7"
 versionsPlugin = "0.53.0"