Add release notes for 2.19.2 (#18118)

Signed-off-by: Zelin Hao <[email protected]>

Author: zelinh

CHANGELOG.md

@@ -13,7 +13,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Removed
 
 ### Fixed
-- Fix NPE in node stats due to QueryGroupTasks ([#17576](https://github.com/opensearch-project/OpenSearch/pull/17576))
 
 ### Security
 

release-notes/opensearch.release-notes-2.19.2.md

@@ -0,0 +1,16 @@
+## 2025-04-28 Version 2.19.2 Release Notes
+
+## [2.19.2]
+### Added
+
+### Dependencies
+- Update tj-actions/changed-files usage from the Github Action checks since it has been compromised ([#17601](https://github.com/opensearch-project/OpenSearch/pull/17601))
+
+### Changed
+
+### Deprecated
+
+### Fixed
+- Fix NPE in node stats due to QueryGroupTasks ([#17576](https://github.com/opensearch-project/OpenSearch/pull/17576))
+- Resolve typo in 2.x jdk version 21 ([#17523](https://github.com/opensearch-project/OpenSearch/pull/17523))
+- Authenticate jenkins calls for gradle check ([#17701](https://github.com/opensearch-project/OpenSearch/pull/17701))