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

Author: renovate[bot]

build.gradle.kts

@@ -1,5 +1,5 @@
 plugins {
-	id("org.springframework.boot") version "2.7.17"
+	id("org.springframework.boot") version "3.4.3"
 	id("io.spring.dependency-management") version "1.1.3"
 	id("com.github.ben-manes.versions") version "0.51.0"
 	id("java")