Add post for junit extension

Signed-off-by: Robert Young <[email protected]>

Author: robobario

_posts/2025-09-16-release-0_12_0-junit-extension.md

@@ -0,0 +1,16 @@
+---
+layout: post
+title:  "kroxylicious-junit5-extension release 0.12.0"
+date:   2025-09-16 00:00:00 +0000
+author: "Robert Young"
+author_url: "https://github.com/robobario"
+categories:  releases junit5-extension kafka4.1
+---
+
+The Kroxylicious project is very pleased to announce the [0.12.0](https://github.com/kroxylicious/kroxylicious-junit5-extension/releases/tag/v0.12.0) release of our Junit5 Extension. This release introduces support for Apache Kafka 4.1, removes the deprecated `@SaslPlainAuth` annotation and enables Users to customize the names of topics automatically created by the extension.
+
+Support for earlier versions of Kafka is maintained, including versions that require Zookeeper. Just put the version of Kafka you want to use on the classpath - and everything else is automatic.
+
+### Feedback
+
+Please let us know, through [Slack](https://kroxylicious.slack.com) or [GitHub](https://github.com/kroxylicious/kroxylicious-junit5-extension/issues), if you find the extension interesting or helpful.