Bump org.springframework.boot:spring-boot-gradle-plugin in /buildSrc

Bumps [org.springframework.boot:spring-boot-gradle-plugin](https://github.com/spring-projects/spring-boot) from 3.4.1 to 3.4.2.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.4.1...v3.4.2)

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

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

buildSrc/build.gradle.kts

@@ -10,7 +10,7 @@ dependencies {
     val kotlinVersion = "2.0.10"
     implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")              // kotlin("jvm")
     implementation("org.jetbrains.kotlin:kotlin-allopen:$kotlinVersion")                    // kotlin("plugin.spring")
-    implementation("org.springframework.boot:spring-boot-gradle-plugin:3.4.1")      // id("org.springframework.boot")
+    implementation("org.springframework.boot:spring-boot-gradle-plugin:3.4.2")      // id("org.springframework.boot")
     implementation("io.spring.gradle:dependency-management-plugin:1.1.7")           // id("io.spring.dependency-management")
     implementation("com.adarshr:gradle-test-logger-plugin:4.0.0")                   // id("com.adarshr.test-logger")
     implementation("io.gitlab.arturbosch.detekt:detekt-gradle-plugin:1.23.7")       // id("io.gitlab.arturbosch.detekt")