Bump actions/download-artifact from 5 to 6 (#968)

* Bump actions/download-artifact from 5 to 6

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

* Update changelog

Signed-off-by: dependabot[bot] <[email protected]>

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release-drafter.yml

@@ -50,7 +50,7 @@ jobs:
       contents: write
     steps:
       - name: Retrieve release distributions
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: release-dists
           path: dist

CHANGELOG.md

@@ -21,7 +21,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Bumps `aiohttp` from >=3.9.4,<4 to >=3.10.11,<4 ([#920](https://github.com/opensearch-project/opensearch-py/pull/920))
 - Bump `pytest-asyncio` from <=0.25.1 to <=1.2.0 ([#936](https://github.com/opensearch-project/opensearch-py/pull/936), [#950](https://github.com/opensearch-project/opensearch-py/pull/950))
 - Bumps `lycheeverse/lychee-action` from 1.9.3 to 2.0.2 ([#946](https://github.com/opensearch-project/opensearch-py/pull/946))
-- Bump `actions/download-artifact` from 4 to 5 ([#957](https://github.com/opensearch-project/opensearch-py/pull/957))
+- Bump `actions/download-artifact` from 4 to 6 ([#957](https://github.com/opensearch-project/opensearch-py/pull/957), [#968](https://github.com/opensearch-project/opensearch-py/pull/968))
 - Bump `actions/cache` from 3 to 4 ([#958](https://github.com/opensearch-project/opensearch-py/pull/958))
 - Bump `peter-evans/create-pull-request` from 6 to 7 ([#959](https://github.com/opensearch-project/opensearch-py/pull/959))
 - Bump `actions/setup-python` from 5 to 6 ([#961](https://github.com/opensearch-project/opensearch-py/pull/961))