Add a comment about gradle/gradle#14017

See gh-24171

spring-webmvc/spring-webmvc.gradle

@@ -62,7 +62,7 @@ dependencies {
 	testCompile("io.reactivex.rxjava3:rxjava")
 	testCompile("org.jetbrains.kotlin:kotlin-script-runtime")
 	testRuntime("org.jetbrains.kotlin:kotlin-scripting-jsr223")
-	testRuntime("org.jetbrains.kotlinx:kotlinx-coroutines-core") // Temporary dependency to fix a NoClassDefFoundError error, should not be necessary
+	testRuntime("org.jetbrains.kotlinx:kotlinx-coroutines-core") // https://github.com/gradle/gradle/issues/14017
 	testRuntime("org.jruby:jruby")
 	testRuntime("org.python:jython-standalone")
 	testRuntime("org.webjars:underscorejs")