Document reproducible archives by default for gradle >= 9

Author: raphiz

README.md

@@ -217,9 +217,10 @@ application {
 
 Checkout the [`application` plugin documentation](https://docs.gradle.org/current/userguide/application_plugin.html) for any further details.
 
-### Rule #6: Tell gradle to be more reproducible
+### Rule #6: Tell gradle to be more reproducible (Gradle Versions 8 and lower)
 
-Gradle has [a few switches to make builds more reproducible](https://docs.gradle.org/current/userguide/working_with_files.html#sec:reproducible_archives). These must be set to ensure proper reproducibility of the genereated `.jar` files.
+Gradle has [a few switches to make builds more reproducible](https://docs.gradle.org/current/userguide/working_with_files.html#sec:reproducible_archives). These must be set in Gradle Versions < 9 to ensure proper reproducibility of the genereated `.jar` files.
+[Gradle 9 and onwards produces reproducible archives by default](https://gradle.org/whats-new/gradle-9/#reproducible-archives-by-default)
 
 ```kotlin
 // Important: This configuration is probably not complete for your project!