MAINT: Bump actions/download-artifact from 4.1.9 to 4.2.0

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.9 to 4.2.0.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@cc20338...b14cf4c)

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

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

Author: dependabot[bot]

.github/workflows/emscripten.yml

@@ -73,7 +73,7 @@ jobs:
       (github.event_name == 'schedule')
     steps:
       - name: Download wheel artifact(s)
-        uses: actions/download-artifact@cc203385981b70ca67e1cc392babf9cc229d5806  # v4.1.9
+        uses: actions/download-artifact@b14cf4c92620c250e1c074ab0a5800e37df86765  # v4.2.0
         with:
           path: wheelhouse/
           merge-multiple: true