Fixed commit workflow for dependabot PR helper (#4331)

* Fixed label for dependabot PR helper

Signed-off-by: Kunal Kotwani <kkotwani@amazon.com>

* Update autocommit workflow for dependabot changelog

Signed-off-by: Kunal Kotwani <kkotwani@amazon.com>

* Add version config for dependabot changelog helper

Signed-off-by: Kunal Kotwani <kkotwani@amazon.com>

Signed-off-by: Kunal Kotwani <kkotwani@amazon.com>

.github/workflows/changelog_verifier.yml

@@ -14,9 +14,15 @@ jobs:
           ref: ${{ github.event.pull_request.head.sha }}
 
       - uses: dangoslen/dependabot-changelog-helper@v1
+        with:
+          version: 'Unreleased'
 
       - uses: stefanzweifel/git-auto-commit-action@v4
         with:
           commit_message: "Update changelog"
+          branch: ${{ github.head_ref }}
+          commit_user_name: dependabot[bot]
+          commit_user_email: support@github.com
+          commit_options: '--signoff'
 
       - uses: dangoslen/changelog-enforcer@v3

CHANGELOG.md

@@ -22,6 +22,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Restore using the class ClusterInfoRequest and ClusterInfoRequestBuilder from package 'org.opensearch.action.support.master.info' for subclasses ([#4307](https://github.com/opensearch-project/OpenSearch/pull/4307))
 - Do not fail replica shard due to primary closure ([#4133](https://github.com/opensearch-project/OpenSearch/pull/4133))
 - Add timeout on Mockito.verify to reduce flakyness in testReplicationOnDone test([#4314](https://github.com/opensearch-project/OpenSearch/pull/4314))
+- Commit workflow for dependabot changelog helper ([#4331](https://github.com/opensearch-project/OpenSearch/pull/4331))
 
 ### Security
 - CVE-2022-25857 org.yaml:snakeyaml DOS vulnerability ([#4341](https://github.com/opensearch-project/OpenSearch/pull/4341))
@@ -38,6 +39,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### Fixed
 - PR reference to checkout code for changelog verifier ([#4296](https://github.com/opensearch-project/OpenSearch/pull/4296))
+- Commit workflow for dependabot changelog helper ([#4331](https://github.com/opensearch-project/OpenSearch/pull/4331))
 
 ### Security