Fix CHANGELOG errors on main (opensearch-project#5962)

Somehow an entirely misplaced section was put at the top of the file.
Additionally two changes had been backported to 2.x but were in the
wrong section.

Signed-off-by: Andrew Ross <[email protected]>

Signed-off-by: Andrew Ross <[email protected]>

CHANGELOG.md

@@ -1,11 +1,4 @@
-
 # CHANGELOG
-## [Unreleased]
-### Dependencies
-- Bumps `azure-core-http-netty` from 1.12.7 to 1.12.8
-- Bumps `reactor-netty` from 1.1.1 to 1.1.2
-
-
 All notable changes to this project are documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). See the [CONTRIBUTING guide](./CONTRIBUTING.md#Changelog) for instructions on how to add changelog entries.
@@ -42,15 +35,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bumps `maven-model` from 3.6.2 to 3.8.6 ([#5599](https://github.com/opensearch-project/OpenSearch/pull/5599))
 - Bumps `maxmind-db` from 2.1.0 to 3.0.0 ([#5601](https://github.com/opensearch-project/OpenSearch/pull/5601))
 - Bumps `protobuf-java` from 3.21.11 to 3.21.12 ([#5603](https://github.com/opensearch-project/OpenSearch/pull/5603))
-- Update nebula-publishing-plugin to 19.2.0 ([#5704](https://github.com/opensearch-project/OpenSearch/pull/5704))
+- Bumps `azure-core-http-netty` from 1.12.7 to 1.12.8
 
 ### Changed
 - [CCR] Add getHistoryOperationsFromTranslog method to fetch the history snapshot from translogs ([#3948](https://github.com/opensearch-project/OpenSearch/pull/3948))
 - Relax visibility of the HTTP_CHANNEL_KEY and HTTP_SERVER_CHANNEL_KEY to make it possible for the plugins to access associated Netty4HttpChannel / Netty4HttpServerChannel instance ([#4638](https://github.com/opensearch-project/OpenSearch/pull/4638))
 - Migrate client transports to Apache HttpClient / Core 5.x ([#4459](https://github.com/opensearch-project/OpenSearch/pull/4459))
 - Changed http code on create index API with bad input raising NotXContentException from 500 to 400 ([#4773](https://github.com/opensearch-project/OpenSearch/pull/4773))
 - Change http code for DecommissioningFailedException from 500 to 400 ([#5283](https://github.com/opensearch-project/OpenSearch/pull/5283))
-- [Refactor] Use local opensearch.common.SetOnce instead of lucene's utility class ([#5947](https://github.com/opensearch-project/OpenSearch/pull/5947))
 
 ### Deprecated
 
@@ -86,9 +78,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add update-index-settings allowlist for searchable snapshot ([#5907](https://github.com/opensearch-project/OpenSearch/pull/5907))
 
 ### Dependencies
+- Update nebula-publishing-plugin to 19.2.0 ([#5704](https://github.com/opensearch-project/OpenSearch/pull/5704))
+- Bumps `reactor-netty` from 1.1.1 to 1.1.2
 
 ### Changed
 - Use ReplicationFailedException instead of OpensearchException in ReplicationTarget ([#4725](https://github.com/opensearch-project/OpenSearch/pull/4725))
+- [Refactor] Use local opensearch.common.SetOnce instead of lucene's utility class ([#5947](https://github.com/opensearch-project/OpenSearch/pull/5947))
 
 ### Deprecated