[8.x] (backport #17550) Release notes for 8.17.5 (#17564)

* Release notes for 8.17.5 (#17550)

* Update release notes for 8.17.5

* Filter out non-user facing commits/changes from release notes

* Update based on PR review

Co-authored-by: Karen Metts <[email protected]>

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Co-authored-by: logstashmachine <[email protected]>
Co-authored-by: donoghuc <[email protected]>
Co-authored-by: Karen Metts <[email protected]>
(cherry picked from commit 16ee40c)

# Conflicts:
#	docs/static/releasenotes.asciidoc

* Resolve merge conflict from mergify cherry-pick

---------

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

Author: 3 people

docs/static/releasenotes.asciidoc

@@ -4,6 +4,7 @@
 This section summarizes the changes in the following releases:
 
 * <<logstash-8-18-0,Logstash 8.18.0>>
+* <<logstash-8-17-5,Logstash 8.17.5>>
 * <<logstash-8-17-4,Logstash 8.17.4>>
 * <<logstash-8-17-3,Logstash 8.17.3>>
 * <<logstash-8-17-2,Logstash 8.17.2>>
@@ -137,6 +138,27 @@ This section summarizes the changes in the following releases:
 
 * Support additional `oauth` and `sasl` configuration options for configuring kafka client https://github.com/logstash-plugins/logstash-integration-kafka/pull/189[#189]
 
+[[logstash-8-17-5]]
+=== Logstash 8.17.5 Release Notes
+
+* The `SettingString` setting is now correctly non-nullable and `SettingNullableString` is nullable. https://github.com/elastic/logstash/pull/17522[#17522]
+
+[[plugins-8-17-5]]
+==== Plugins
+
+*Elasticsearch Filter - 3.17.1*
+
+* Add elastic-transport client support used in elasticsearch-ruby 8.x https://github.com/logstash-plugins/logstash-filter-elasticsearch/pull/193[#193]
+
+*Elasticsearch Input - 4.21.2*
+
+* Add elastic-transport client support used in elasticsearch-ruby 8.x https://github.com/logstash-plugins/logstash-input-elasticsearch/pull/225[#225]
+
+*Http_poller Input - 5.6.1*
+
+* Fix issue with new 'uri' gem leading to runtime exception https://github.com/logstash-plugins/logstash-input-http_poller/pull/148[#148]
+
+
 [[logstash-8-17-4]]
 === Logstash 8.17.4 Release Notes