Add release notes for 2.19.5

Signed-off-by: opensearch-ci <opensearch-infra@amazon.com>

Author: opensearch-ci-bot

release-notes/opensearch-dashboards-assistant.release-notes-2.19.5.0.md

@@ -0,0 +1,8 @@
+## Version 2.19.5 Release Notes
+
+Compatible with OpenSearch and OpenSearch Dashboards version 2.19.5
+
+### Bug Fixes
+
+* CVE-2025-64718 ([#635](https://github.com/opensearch-project/dashboards-assistant/pull/635))
+* Fix CVE-2025-5889 ([#602](https://github.com/opensearch-project/dashboards-assistant/pull/602))