Add release notes for #14796

(cherry picked from commit edc5f43)

Author: ansd

release-notes/4.1.6.md

@@ -0,0 +1,10 @@
+## RabbitMQ 4.1.6
+
+### Core Server
+
+#### Bug Fixes
+
+* Enabling the `khepri_db` feature flag while the [Log Exchange](https://www.rabbitmq.com/docs/logging#log-exchange)
+  was enabled could cause a RabbitMQ node to run out of memory and crash.
+
+  GitHub issues: [#14069](https://github.com/rabbitmq/rabbitmq-server/discussions/14069), [#14796](https://github.com/rabbitmq/rabbitmq-server/pull/14796)

release-notes/4.2.0.md

@@ -291,7 +291,10 @@ compared to other versions.
 
    GitHub issue: [#14655](https://github.com/rabbitmq/rabbitmq-server/pull/14655)
 
+ * Enabling the `khepri_db` feature flag while the [Log Exchange](https://www.rabbitmq.com/docs/logging#log-exchange)
+   was enabled could cause a RabbitMQ node to run out of memory and crash.
 
+   GitHub issues: [#14069](https://github.com/rabbitmq/rabbitmq-server/discussions/14069), [#14796](https://github.com/rabbitmq/rabbitmq-server/pull/14796)
 
 ### Stream Plugin