Add release notes for 1.3.16 (opensearch-project#13280)

mgodwan · web-flow · commit c4843c9bd792 · 2024-04-18T08:55:01.000-04:00
Signed-off-by: mgodwan &lt;mgodwan@amazon.com&gt;
diff --git a/release-notes/opensearch.release-notes-1.3.16.md b/release-notes/opensearch.release-notes-1.3.16.md
@@ -0,0 +1,4 @@
+## 2024-04-18 Version 1.3.16 Release Notes
+
+### Upgrades
+- Bump `netty` from 4.1.107.Final to 4.1.109.Final ([#12924](https://github.com/opensearch-project/OpenSearch/pull/12924), [#13233](https://github.com/opensearch-project/OpenSearch/pull/13233))
