fix(deps): bump org.springframework.boot from 3.4.0 to 3.4.2

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 3.4.0 to 3.4.2.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.4.0...v3.4.2)

---
updated-dependencies:
- dependency-name: org.springframework.boot
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
   kotlin("jvm") version "2.1.0"
   kotlin("plugin.spring") version "2.1.0"
-  id("org.springframework.boot") version "3.4.0"
+  id("org.springframework.boot") version "3.4.2"
   id("io.spring.dependency-management") version "1.1.7"
   id("com.diffplug.spotless") version "6.25.0"
 }