Bump actions/download-artifact from 4 to 5

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

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/test_deployment.yml

@@ -72,7 +72,7 @@ jobs:
           sudo make test/vm/install-deps PACKAGE_MANAGER=apt-get
       
       - name: Download generated ISO
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: ${{ matrix.image_name }}-${{ matrix.version }}${{ matrix.flatpaks == 'false' && '' || format('-{0}', matrix.flatpaks) }}