chore(deps): bump actions/download-artifact from 3 to 4 (#698)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4)

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

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

.github/workflows/test.yml

@@ -139,7 +139,7 @@ jobs:
     steps:
       # Load the docker image tarball from github actions artifacts and run tests (one runner per test due to matrix)
       - name: Download Tarball Artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: pstake-docker-image