chore(deps): update plugin org.springframework.boot to v3

Author: renovate[bot]

build.gradle

@@ -2,7 +2,7 @@ import org.gradle.api.JavaVersion
 
 plugins {
     id 'java'
-    id 'org.springframework.boot' version '2.7.18'
+    id 'org.springframework.boot' version '3.5.7'
     id 'io.spring.dependency-management' version '1.0.15.RELEASE'
 }