release notes for 2.18 (#410) (#412)

(cherry picked from commit 70742b8)

Signed-off-by: sumukhswamy <sumukhhs@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-query-workbench.release-notes-2.18.0.0.md

@@ -0,0 +1,9 @@
+## Version 2.18.0.0 Release Notes
+
+Compatible with OpenSearch and OpenSearch Dashboards 2.18.0
+
+### Bug Fixes
+
+- fix workbench routes to support modal mounting ([#401](https://github.com/opensearch-project/dashboards-query-workbench/pull/401))
+- [Bug]added error handling for api calls ([#408](https://github.com/opensearch-project/dashboards-query-workbench/pull/408))
+