Bump actions/download-artifact from 4.1.5 to 4.1.6 (#1438)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.5 to 4.1.6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v4.1.5...v4.1.6)

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

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

.github/workflows/tests.yml

@@ -287,7 +287,7 @@ jobs:
               print(f"VIRTUALENV_PIP={pip.__version__}", file=io)
 
       - name: Download coverage data
-        uses: actions/download-artifact@v4.1.5
+        uses: actions/download-artifact@v4.1.6
         with:
           name: coverage-data
           # this action doesn't seem to respect working-directory so include working-directory value in path