Update 3.12.7 release notes

(cherry picked from commit 51b193afbfddeac325be6c09b2fdd288fcf29328)

Author: michaelklishin

release-notes/3.12.7.md

@@ -44,6 +44,12 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
 
    GitHub issue: [#9545](https://github.com/rabbitmq/rabbitmq-server/pull/9545)
 
+ * Avoid log noise when inter-node connections frequently fail and recover.
+
+   Contributed by @Ayanda-D.
+
+   GitHub issue: [#9667](https://github.com/rabbitmq/rabbitmq-server/pull/9667)
+
 #### Enhancements
 
  * Optimized stream index scans. Longer scans could result in some replicas stopping
@@ -57,7 +63,7 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
 
    GitHub issue: [#9548](https://github.com/rabbitmq/rabbitmq-server/pull/9548)
 
- * [Queue length limit](https://rabbitmq.com/maxlength.html) overflow behavior now can be configured via [operator policies]().
+ * [Queue length limit](https://rabbitmq.com/maxlength.html) overflow behavior now can be configured via [operator policies](https://rabbitmq.com/parameters.html#operator-policies).
 
    Contributed by @SimonUnge (AWS).
 
@@ -66,6 +72,12 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
 
 ### CLI Tools
 
+#### Bug Fixes
+
+ * `rabbitmq-streams list_stream_consumer_groups` incorrectly validated the set of columns it accepts.
+
+   GitHub issue: [#9671](https://github.com/rabbitmq/rabbitmq-server/pull/9671)
+
 #### Enhancements
 
  * Several `list_stream_*` commands (available via both `rabbitmq-diagnostics` and `rabbitmq-streams`) commands now can
@@ -89,8 +101,21 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
 
 ### Management Plugin
 
+#### Bug Fixes
+
+ * Message consumption with the "Nack message, requeue: true" option did not actually requeue deliveries.
+
+   GitHub issue: [#9715](https://github.com/rabbitmq/rabbitmq-server/pull/9715)
+
 #### Enhancements
 
+ * HTTP API request body size is now limited to 10 MiB by default.
+   Two endpoints, one that accepts messages for publishing (note: publishing over the HTTP API is greatly discouraged)
+   and another for [definition import](https://rabbitmq.com/definitions.html#import),
+   will now reject larger transfers with a `400 Bad Request` response.
+
+   GitHub issue: [#9708](https://github.com/rabbitmq/rabbitmq-server/pull/9708)
+
  * `DELETE /api/queues/{vhost}/{name}` now can delete exclusive queues.
 
    GitHub issue: [#8758](https://github.com/rabbitmq/rabbitmq-server/issues/8758)
@@ -109,6 +134,17 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
    GitHub issue: [#9530](https://github.com/rabbitmq/rabbitmq-server/pull/9530)
 
 
+### Web MQTT Plugin
+
+#### Bug Fixes
+
+ * Avoid an exception when a not fully established MQTT-over-WebSockets connection terminated.
+
+   Contributed by @gomoripeti (CloudAMQP).
+
+   GitHub issue: [#9654](https://github.com/rabbitmq/rabbitmq-server/pull/9654)
+
+
 ### JMS Topic Exchange Plugin
 
 #### Bug Fixes