Release notes for 9.1.1 (#17914) (#17923)

Release notes for 9.1.1

---------



(cherry picked from commit c1b589d)

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/release-notes/index.md

@@ -21,6 +21,38 @@ To check for security updates, go to [Security announcements for the Elastic sta
 % ### Fixes [logstash-next-fixes]
 % *
 
+## 9.1.1 [logstash-9.1.1-release-notes]
+
+### Features and enhancements [logstash-9.1.1-features-enhancements]
+
+No user-facing changes in Logstash core.
+
+### Plugins [logstash-plugin-9.1.1-changes]
+
+**Elastic_integration Filter - 9.1.1**
+
+* Add terminate processor support [#345](https://github.com/elastic/logstash-filter-elastic_integration/pull/345)
+
+**Translate Filter - 3.4.3**
+
+* Allow YamlFile's Psych::Parser and Visitor instances to be garbage collected [#104](https://github.com/logstash-plugins/logstash-filter-translate/pull/104)
+
+**Xml Filter - 4.3.2**
+
+* Update Nokogiri dependency version [#89](https://github.com/logstash-plugins/logstash-filter-xml/pull/89)
+
+**Azure_event_hubs Input - 1.5.2**
+
+* Updated JWT dependency [#101](https://github.com/logstash-plugins/logstash-input-azure_event_hubs/pull/101)
+
+**Snmp Integration - 4.0.7**
+
+* FIX: The `snmptrap` input now correctly enforces the user security level set by `security_level` config, and drops received events that do not match the configured value [#75](https://github.com/logstash-plugins/logstash-integration-snmp/pull/75)
+
+**Elasticsearch Output - 12.0.6**
+
+* Add headers reporting uncompressed size and doc count for bulk requests [#1217](https://github.com/logstash-plugins/logstash-output-elasticsearch/pull/1217)
+
 ## 9.1.0 [logstash-9.1.0-release-notes]
 
 ### Features and enhancements [logstash-9.1.0-features-enhancements]