[AUTO] Add release notes for 3.3.0 (#1936)

* Add release notes for 3.3.0

Signed-off-by: opensearch-ci <[email protected]>

* Update release notes for version 3.3.0.0

Signed-off-by: Peter Zhu <[email protected]>

---------

Signed-off-by: opensearch-ci <[email protected]>
Signed-off-by: Peter Zhu <[email protected]>
Co-authored-by: Peter Zhu <[email protected]>

Author: opensearch-ci-bot

release-notes/opensearch-alerting.release-notes-3.3.0.0.md

@@ -0,0 +1,12 @@
+## Version 3.3.0 Release Notes
+
+Compatible with OpenSearch and OpenSearch Dashboards version 3.3.0
+
+### Features
+* Adds support for leveraging user custom attributes in Alerting monitors ([#1917](https://github.com/opensearch-project/alerting/pull/1917))
+
+### Bug Fixes
+* Update System.env syntax for Gradle 9 compatibility ([#1920](https://github.com/opensearch-project/alerting/pull/1920))
+
+### Maintenance
+* [AUTO] Increment version to 3.3.0-SNAPSHOT ([#1918](https://github.com/opensearch-project/alerting/pull/1918))