Bump actions/download-artifact from 7.0.0 to 8.0.0 in /.github/workflows

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>

Author: dependabot[bot]

.github/workflows/ci-test-pr-coverage.yml

@@ -34,7 +34,7 @@ jobs:
         && github.event.workflow_run.conclusion == 'success'
     steps:
     - name: Download PR test coverage report
-      uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # tag=v7.0.0
+      uses: actions/download-artifact@70fc10c6e5e1ce46ad2ea6f2b72d43f7d47b13c3 # tag=v8.0.0
       with:
         name: pr-test-coverage-report
         github-token: ${{ secrets.GITHUB_TOKEN }}