build(deps): bump actions/download-artifact

Bumps the github-actions group with 1 update in the / directory: [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `actions/download-artifact` from 4 to 5
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/release-openai.yml

@@ -47,7 +47,7 @@ jobs:
     env:
       DIST_DIR: instrumentation/elastic-opentelemetry-instrumentation-openai/dist/
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v5
         with:
           name: packages
           path: ${{ env.DIST_DIR }}