Update 4.3.0 release notes

Author: michaelklishin

release-notes/4.3.0.md

@@ -97,6 +97,13 @@ compared to other versions.
    GitHub issue: [#14852](https://github.com/rabbitmq/rabbitmq-server/issues/14852)
 
 
+### Grafana Dashboards
+
+#### Enhancements
+
+ * The [dashboards](https://grafana.com/orgs/rabbitmq) were updated for the most recent RabbitMQ release series.
+
+
 ### Management Plugin
 
 #### Enhancements
@@ -119,6 +126,10 @@ compared to other versions.
 
    GitHub issue: [#14872](https://github.com/rabbitmq/rabbitmq-server/pull/14872)
 
+ * AMQP 1.0 shovels ignored the `sasl` URI parameter.
+
+   GitHub issue: [#14867](https://github.com/rabbitmq/rabbitmq-server/pull/14867)
+
 
 ### OAuth 2 Plugin