Forward port release notes for 8.18.2 to 8.19 (#17675) (#17694)

Refined release notes for 8.18.2

---------



(cherry picked from commit b1723b6)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: logstashmachine <[email protected]>
Co-authored-by: andsel <[email protected]>

Author: 4 people

docs/static/releasenotes.asciidoc

@@ -3,6 +3,7 @@
 
 This section summarizes the changes in the following releases:
 
+* <<logstash-8-18-2,Logstash 8.18.2>>
 * <<logstash-8-18-1,Logstash 8.18.1>>
 * <<logstash-8-18-0,Logstash 8.18.0>>
 * <<logstash-8-17-6,Logstash 8.17.6>>
@@ -85,6 +86,19 @@ This section summarizes the changes in the following releases:
 * <<logstash-8-0-0-alpha2,Logstash 8.0.0-alpha2>>
 * <<logstash-8-0-0-alpha1,Logstash 8.0.0-alpha1>>
 
+[[logstash-8-18-2]]
+=== Logstash 8.18.2 Release Notes
+
+No user-facing changes in Logstash core.
+
+==== Plugins
+
+*Kafka Integration - 11.6.1*
+
+* Expose the SASL client callback class setting to the Logstash configuration https://github.com/logstash-plugins/logstash-integration-kafka/pull/177[#177]
+* Adds a mechanism to load AWS IAM authentication as SASL client libraries at startup https://github.com/logstash-plugins/logstash-integration-kafka/pull/178[#178]
+
+
 [[logstash-8-18-1]]
 === Logstash 8.18.1 Release Notes