Added 2.8 release notes (opensearch-project#597) (opensearch-project#598

)

Signed-off-by: bowenlan-amzn <bowenlan23@gmail.com>
(cherry picked from commit 6d93206)

Co-authored-by: bowenlan-amzn <bowenlan23@gmail.com>
Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

release-notes/opensearch-security-analytics-dashboards.release-notes-2.8.0.0.md

@@ -0,0 +1,24 @@
+## Version 2.8.0.0 2023-05-26
+
+Compatible with OpenSearch Dashboards 2.8.0
+
+### Maintenance
+* cypress | create detector specs update. ([#518](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/518))
+* rule's cypress tests update. ([#581](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/581))
+* Moving the CODEOWNERS to the right location ([#583](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/583))
+
+### Features
+* [Correlations] Added link to rule details; simplified rule parsing. ([#571](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/571))
+* [FEATURE] Finding flyout loading state. ([#562](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/562))
+* Add correlation rule details into the finding details flyout. ([#565](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/565))
+* UX improvements for correlation engine. ([#561](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/561))
+* Add a details button to open the findings flyout from the correlations page. ([#572](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/572))
+* [Overview page] Fixed recent alerts & finding order; count for pie chart. ([#574](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/574))
+* Detection rule new detection ux. ([#575](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/575))
+
+### Bug Fixes
+* Finding's fly-out has no correlations if open from alerts. ([#558](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/558))
+* Wrong field mappings for the cloud trail logs. ([#574](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/574))
+
+### Documentation
+* Added 2.8 release notes. ([#597](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/597))