Bump actions/upload-artifact from 5 to 6 (#989)

* Bump actions/upload-artifact from 5 to 6

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

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

Signed-off-by: dependabot[bot] <support@github.com>

* Update changelog

Signed-off-by: dependabot[bot] <support@github.com>

---------

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

Author: dependabot[bot]

.github/workflows/release-drafter.yml

@@ -36,7 +36,7 @@ jobs:
         run: |
           python -m build
       - name: upload windows dists
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: release-dists
           path: dist/

CHANGELOG.md

@@ -17,6 +17,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Bump `pytest-asyncio` from <=1.2.0 to <=1.3.0 ([#984](https://github.com/opensearch-project/opensearch-py/pull/984))
 - Bump `actions/checkout` from 5 to 6 ([#986](https://github.com/opensearch-project/opensearch-py/pull/986))
 - Bump `codecov/codecov-action` from 4 to 5 ([#985](https://github.com/opensearch-project/opensearch-py/pull/985))
+- Bump `actions/upload-artifact` from 5 to 6 ([#989](https://github.com/opensearch-project/opensearch-py/pull/989))
 
 ## [3.1.0]
 ### Added