Adding 2.15 release notes (#738)

* 2.15 release notes

Signed-off-by: Amit Galitzky <amgalitz@amazon.com>

* remove date from notes

Signed-off-by: Amit Galitzky <amgalitz@amazon.com>

---------

Signed-off-by: Amit Galitzky <amgalitz@amazon.com>
(cherry picked from commit 88cab45)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

CHANGELOG.md

@@ -15,13 +15,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.1.0/)
 ## [Unreleased 2.x](https://github.com/opensearch-project/flow-framework/compare/2.14...2.x)
 ### Features
 ### Enhancements
-- Add Workflow Step for Reindex from source index to destination ([#718](https://github.com/opensearch-project/flow-framework/pull/718))
-- Add param to delete workflow API to clear status even if resources exist ([#719](https://github.com/opensearch-project/flow-framework/pull/719))
-- Add additional default use cases ([#731](https://github.com/opensearch-project/flow-framework/pull/731))
-- Add conversation search default use case with RAG tool ([#732](https://github.com/opensearch-project/flow-framework/pull/732))
-
 ### Bug Fixes
-- Add user mapping to Workflow State index ([#705](https://github.com/opensearch-project/flow-framework/pull/705))
 
 ### Infrastructure
 ### Documentation

release-notes/opensearch-flow-framework.release-notes-2.15.0.0.md

@@ -0,0 +1,12 @@
+## Version 2.15.0.0
+
+Compatible with OpenSearch 2.15.0
+
+### Enhancements
+- Add Workflow Step for Reindex from source index to destination ([#718](https://github.com/opensearch-project/flow-framework/pull/718))
+- Add param to delete workflow API to clear status even if resources exist ([#719](https://github.com/opensearch-project/flow-framework/pull/719))
+- Add additional default use cases ([#731](https://github.com/opensearch-project/flow-framework/pull/731))
+- Add conversation search default use case with RAG tool ([#732](https://github.com/opensearch-project/flow-framework/pull/732))
+
+### Bug Fixes
+- Add user mapping to Workflow State index ([#705](https://github.com/opensearch-project/flow-framework/pull/705))