Bump actions/download-artifact from 3 to 4

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] <support@github.com>

.github/workflows/pythonpackage.yml

@@ -87,7 +87,7 @@ jobs:
     if: github.event.action == 'published' || endsWith(github.ref, 'main')
     steps:
     - name: Get the built packages
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: apps-python-dist
         path: dist