added release notes (opensearch-project#966)

* added release notes

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

* added release notes

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

---------

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

Author: sumukhswamy

release-notes/opensearch-reporting.release-notes-2.12.0.0.md

@@ -0,0 +1,10 @@
+## Version 2.12.0.0 Release Notes
+
+Compatible with OpenSearch 2.12.0
+
+### Maintenance
+* Onboard jenkins prod docker images to github actions ([#924](https://github.com/opensearch-project/reporting/pull/924))
+
+### Infrastructure
+* Bumping ktlint to 0.47.1 ([#960](https://github.com/opensearch-project/reporting/pull/960))
+* upgrade gradle to 8.5 ([#941](https://github.com/opensearch-project/reporting/pull/941))