Add release notes for v2.9.0.0 (#428)

Signed-off-by: Rishikesh1159 <[email protected]>

release-notes/release-notes/opensearch.job-scheduler.release-notes-2.9.0.0.md

@@ -0,0 +1,16 @@
+## Version 2.9.0.0 2023-07-24
+
+Compatible with OpenSearch 2.9.0
+
+### Added
+* Add MacOS CI Workflow([#412](https://github.com/opensearch-project/job-scheduler/pull/412))
+
+### Fixed
+* Update job details mapping ([#391](https://github.com/opensearch-project/job-scheduler/pull/391))
+* Force DOCUMENT replication on lock index ([#417](https://github.com/opensearch-project/job-scheduler/pull/417))
+* Fix bug time out of range ([#409](https://github.com/opensearch-project/job-scheduler/pull/409))
+* Update packages according to a change in OpenSearch core ([#422](https://github.com/opensearch-project/job-scheduler/pull/422))
+
+### Maintenance
+* Upgrade gradle version to 8.1.1 ([#402](https://github.com/opensearch-project/job-scheduler/pull/402))
+* Upgrade guava from 31.0.1-jre to latest 32.0.1-jre ([#411](https://github.com/opensearch-project/job-scheduler/pull/411))