Add 2.11 release notes (#123) (#125)

(cherry picked from commit 5d7df9b)

Signed-off-by: yuye-aws <yuyezhu@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

release-notes/opensearch-dashboards-notifications.release-notes-2.11.0.0.md

@@ -0,0 +1,8 @@
+## Version 2.11.0.0 2023-10-18
+Compatible with OpenSearch Dashboards 2.11.0
+
+### Features/Enhancements 
+* Improve wording for TLS-related options ([#115](https://github.com/opensearch-project/dashboards-notifications/pull/115))
+
+### Documentation
+* 2.11 release notes. ([#123](https://github.com/opensearch-project/dashboards-notifications/issues/123))