Added release notes for 2.11.1 (#785) (#786)

* added release notes

Signed-off-by: Amardeepsingh Siglani <amardeep7194@gmail.com>

* updated release notes

Signed-off-by: Amardeepsingh Siglani <amardeep7194@gmail.com>

---------

Signed-off-by: Amardeepsingh Siglani <amardeep7194@gmail.com>
(cherry picked from commit b093c9d)

Co-authored-by: Amardeepsingh Siglani <amardeep7194@gmail.com>

release-notes/opensearch-security-analytics-dashboards.release-notes-2.11.1.0.md

@@ -0,0 +1,12 @@
+## Version 2.11.1.0 2023-11-20
+
+Compatible with OpenSearch Dashboards 2.11.1
+
+### Maintenance
+* Increment version to 2.11.1.0. ([#771](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/771))
+
+### Enhancements
+* Omit field from mapping payload if it matches index field; Abort detector creation when mapping has failed. ([#752](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/752))
+
+### Documentation
+* Added release notes for 2.11.1 ([#785](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/785))