Update gradle

renovate[bot] · web-flow · commit 6c607b14e6b1 · 2025-12-18T22:57:50.000Z
diff --git a/backend/gradle/libs.versions.toml b/backend/gradle/libs.versions.toml
@@ -1,7 +1,7 @@
 [versions]
-kotlin = "1.9.21"
-spring = "1.9.21"
-springBoot = "3.2.0"
+kotlin = "2.3.0"
+spring = "2.3.0"
+springBoot = "4.0.1"
 springDependencyManagement = "1.1.4"
 
 [plugins]
