Bump io.spring.dependency-management from 1.1.5 to 1.1.6 in /kotlin

Bumps [io.spring.dependency-management](https://github.com/spring-gradle-plugins/dependency-management-plugin) from 1.1.5 to 1.1.6.
- [Release notes](https://github.com/spring-gradle-plugins/dependency-management-plugin/releases)
- [Commits](spring-gradle-plugins/dependency-management-plugin@v1.1.5...v1.1.6)

---
updated-dependencies:
- dependency-name: io.spring.dependency-management
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

kotlin/build.gradle

@@ -2,7 +2,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
  id 'org.springframework.boot' version '3.3.1'
- id 'io.spring.dependency-management' version '1.1.5'
+ id 'io.spring.dependency-management' version '1.1.6'
  id 'org.jetbrains.kotlin.jvm' version '2.0.0'
  id 'org.jetbrains.kotlin.plugin.spring' version '2.0.0'
 }