build(deps): Bump actions/download-artifact from 7.0.0 to 8.0.0 (#505)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 7.0.0 to 8.0.0.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@37930b1...70fc10c)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: 8.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/test.yml

@@ -288,7 +288,7 @@ jobs:
         cache-save: ${{ github.event_name != 'pull_request' }}
 
     - name: Download test data
-      uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
+      uses: actions/download-artifact@70fc10c6e5e1ce46ad2ea6f2b72d43f7d47b13c3 # v8.0.0
       with:
         name: test_data
         path: test/test_data/