Rename kotlin-dsl plugin published version variable for clarity
Rename kotlin-dsl plugin published version variable for clarity

and make it a simple val instead of an extra property as it isn't used
elsewhere

Signed-off-by: Paul Merlin <a027184a55211cd23e3f3094f1fdc728df5e0500@gradle.com>

blindpirate/gradle,gradle/gradle,gradle/gradle,robinverduijn/gradle,robinverduijn/gradle,gradle/gradle,gradle/gradle,robinverduijn/gradle,blindpirate/gradle,robinverduijn/gradle,robinverduijn/gradle,blindpirate/gradle,robinverduijn/gradle,gradle/gradle,blindpirate/gradle,blindpirate/gradle,blindpirate/gradle,robinverduijn/gradle,blindpirate/gradle,robinverduijn/gradle,gradle/gradle,blindpirate/gradle,robinverduijn/gradle,gradle/gradle,gradle/gradle,gradle/gradle,blindpirate/gradle,robinverduijn/gradle,blindpirate/gradle,gradle/gradle,robinverduijn/gradle