Added 2.8 release notes (#441)

Signed-off-by: bowenlan-amzn <[email protected]>

Author: bowenlan-amzn

release-notes/opensearch-common-utils.release-notes-2.8.0.0.md

@@ -0,0 +1,20 @@
+## Version 2.8.0.0 2023-05-26
+
+Compatible with OpenSearch 2.8.0
+
+### Maintenance
+* upgrade gradle to 8.1.1. ([#418](https://github.com/opensearch-project/common-utils/pull/418))
+* Sync up MAINTAINERS to CODEOWNERS. ([#427](https://github.com/opensearch-project/common-utils/pull/427))
+* Fix build errors after refactoring of Strings class in core. ([#432](https://github.com/opensearch-project/common-utils/pull/432))
+* updating maintainers and codeowners. ([#438](https://github.com/opensearch-project/common-utils/pull/438))
+* fix codeowners file format. ([#440](https://github.com/opensearch-project/common-utils/pull/440))
+
+### Infrastructure
+* Switch publish maven branches to list. ([#423](https://github.com/opensearch-project/common-utils/pull/423))
+
+### Feature
+* integrate security-analytics & alerting for correlation engine. ([#412](https://github.com/opensearch-project/common-utils/pull/412))
+* NoOpTrigger. ([#420](https://github.com/opensearch-project/common-utils/pull/420))
+
+### Documentation
+* Added 2.8 release notes. ([#441](https://github.com/opensearch-project/common-utils/pull/441))