Update dependency org.springframework.boot:spring-boot-dependencies to v4

Author: renovate[bot]

build.gradle

@@ -29,7 +29,7 @@ plugins {
 }
 
 ext { 
-    springBootVersion = '3.5.7' 
+    springBootVersion = '4.0.0' 
     springDocVersion  = '2.8.14'
 }