Merge pull request #31849 from dreis2211

* gh-31849:
  Align Kotlin API and language versions

Closes gh-31849

spring-boot-project/spring-boot-docs/build.gradle

@@ -40,11 +40,6 @@ plugins.withType(EclipsePlugin) {
 	}
 }
 
-tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile) { 
-	kotlinOptions.apiVersion = '1.6'
-	kotlinOptions.languageVersion = '1.6'
-}
-
 dependencies {
 	actuatorApiDocumentation(project(path: ":spring-boot-project:spring-boot-actuator-autoconfigure", configuration: "documentation"))