[Backport main] [Release 2.18] Add release notes for 2.18 (#470)

(cherry picked from commit 7798198)

Signed-off-by: Jialiang Liang <jiallian@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-reporting.release-notes-2.18.0.0.md

@@ -0,0 +1,9 @@
+## Version 2.18.0.0 Release Notes
+
+Compatible with OpenSearch and OpenSearch Dashboards Version 2.17.0
+
+### Bug Fix
+* Fix missing imports in report_settings ([#464](https://github.com/opensearch-project/dashboards-reporting/pull/464))
+
+### Maintenance
+* [CVE] Bump dompurify to 3.0.11 ([#462](https://github.com/opensearch-project/dashboards-reporting/pull/462))