Update plugin org.springframework.boot to v3.4.2 (#107)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

build.gradle

@@ -1,5 +1,5 @@
 plugins {
-	id 'org.springframework.boot' version '3.4.1'
+	id 'org.springframework.boot' version '3.4.2'
 	id 'io.spring.dependency-management' version '1.1.7'
 	id 'java'
 }