[Doc] Forward 8.18.1 release note (#17635)

* Release notes for 8.18.1 (#17612)

Co-authored-by: logstashmachine <[email protected]>
Co-authored-by: Kaise Cheng <[email protected]>

* [Doc] forward port 8.17.6 release note

---------

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

Author: 3 people

docs/static/releasenotes.asciidoc

@@ -3,7 +3,9 @@
 
 This section summarizes the changes in the following releases:
 
+* <<logstash-8-18-1,Logstash 8.18.1>>
 * <<logstash-8-18-0,Logstash 8.18.0>>
+* <<logstash-8-17-6,Logstash 8.17.6>>
 * <<logstash-8-17-5,Logstash 8.17.5>>
 * <<logstash-8-17-4,Logstash 8.17.4>>
 * <<logstash-8-17-3,Logstash 8.17.3>>
@@ -83,6 +85,28 @@ 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-8-18-1]]
+=== Logstash 8.18.1 Release Notes
+
+* Enhanced keystore validation to prevent the creation of secrets that fail format parsing https://github.com/elastic/logstash/pull/17351[#17351]
+
+[[dependencies-8.18.1]]
+==== Updates to dependencies
+
+* Update JDK to 21.0.7+6 https://github.com/elastic/logstash/pull/17591[#17591]
+
+[[plugins-8.18.1]]
+==== Plugins
+
+*Xml Filter - 4.3.1*
+
+* Update Nokogiri dependency version https://github.com/logstash-plugins/logstash-filter-xml/pull/88[#88]
+
+*Tcp Output - 6.2.2*
+
+* Call connection check after connect https://github.com/logstash-plugins/logstash-output-tcp/pull/61[#61]
+
+
 [[logstash-8-18-0]]
 === Logstash 8.18.0 Release Notes
 
@@ -138,6 +162,24 @@ 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-8-17-6]]
+=== Logstash 8.17.6 Release Notes
+
+No user-facing changes in Logstash.
+
+[[dependencies-8.17.6]]
+==== Updates to dependencies
+
+* Update JDK to 21.0.7+6 https://github.com/elastic/logstash/pull/17591[#17591]
+
+[[plugins-8.17.6]]
+==== Plugins
+
+*Tcp Output - 6.2.2*
+
+* Call connection check after connect https://github.com/logstash-plugins/logstash-output-tcp/pull/61[#61]
+
+
 [[logstash-8-17-5]]
 === Logstash 8.17.5 Release Notes
 
@@ -3378,4 +3420,4 @@ We have added another flag to the Benchmark CLI to allow passing a data file wit
 This feature allows users to run the Benchmark CLI in a custom test case with a custom config and a custom dataset. https://github.com/elastic/logstash/pull/12437[#12437]
 
 ==== Plugin releases
-Plugins align with release 7.14.0
+Plugins align with release 7.14.0