[8.19] [Docs] Add 8.18.1 release notes (#219768) (#220220)

# Backport

This will backport the following commits from `8.18` to `8.19`:
- [[Docs] Add 8.18.1 release notes
(#219768)](#219768)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

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Add 8.18.1 release notes (#219768)\n\n## Summary\n\nAdds 8.18.1 release
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[#670](https://github.com/elastic/platform-docs-team/issues/670)\n\n[Preview](https://kibana_bk_219768.docs-preview.app.elstc.co/guide/en/kibana/8.18/release-notes-8.18.1.html)","sha":"a69ffe9d6276af85f22f6e65384da218e8095ba3","branchLabelMapping":{"^v8.16.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["Team:Docs","release_note:skip","backport:version","v8.19.0","v8.18.1"],"title":"[Docs]
Add 8.18.1 release
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Add 8.18.1 release notes (#219768)\n\n## Summary\n\nAdds 8.18.1 release
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BACKPORT-->

Co-authored-by: wajihaparvez <[email protected]>

Author: florent-leborgne

docs/CHANGELOG.asciidoc

@@ -10,6 +10,7 @@
 
 Review important information about the {kib} 8.x releases.
 
+* <<release-notes-8.18.1>>
 * <<release-notes-8.18.0>>
 * <<release-notes-8.17.6>>
 * <<release-notes-8.17.5>>
@@ -94,6 +95,41 @@ Review important information about the {kib} 8.x releases.
 
 include::upgrade-notes.asciidoc[]
 
+[[release-notes-8.18.1]]
+== {kib} 8.18.1
+
+The 8.18.1 release includes the following enhancements and fixes.
+
+[float]
+[[enhancement-v8.18.1]]
+=== Enhancements
+Elastic Security solution::
+For the Elastic Security 8.18.1 release information, refer to {security-guide}/release-notes.html[_Elastic Security Solution Release Notes_].
+
+[float]
+[[fixes-v8.18.1]]
+=== Fixes
+Dashboards and Visualizations::
+* Syncs the dashboard ES|QL query and filters with the corresponding visualization query in *Lens* ({kibana-pull}218997[#218997]).
+* Correctly formats keywords in metric visualizations ({kibana-pull}218233[#218233]).
+* When exploring a dashboard, the request inspector now shows the correct request and response in any successful scenario ({kibana-pull}216519[#216519]).
+Discover::
+* Fixes incorrect behavior for requests on fields where the *Allow hidden and system indices* (`allow_hidden`) option of the data view could be ignored ({kibana-pull}217628[#217628]).
+* Fixes the result of the *Generate CSV report* action for ES|QL panels ({kibana-pull}216325[#216325]).
+Elastic Observability Solution::
+* Prevents unnecessary suggestion requests when interacting with inputs on the APM *Custom Links* page ({kibana-pull}218927[#218927]).
+* Filters out null values from `sourceDataStreams` ({kibana-pull}218772[#218772]).
+* Fixes a bug with navigating to the *Search Connectors* tab in the AI Assistant Settings ({kibana-pull}217749[#217749]).
+* Improves `aria-label` attributes for correlations ({kibana-pull}217512[#217512]).
+Elastic Security solution::
+For the Elastic Security 8.18.1 release information, refer to {security-guide}/release-notes.html[_Elastic Security Solution Release Notes_].
+Kibana platform::
+* Fixes broken icons in integrations coming from the Home plugin ({kibana-pull}219206[#219206]).
+Kibana security::
+* Removes check for unused connector role ({kibana-pull}219358[#219358]).
+Machine Learning::
+* Fixes error when switching Service providers in the *Inference Endpoint* flyout ({kibana-pull}219020[#219020]).
+* Corrects quotes in ES|QL queries for function arguments ({kibana-pull}217680[#217680]).
 
 [[release-notes-8.18.0]]
 == {kib} 8.18.0