⬆ Bump actions/download-artifact from 7 to 8 (#15020)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 7 to 8.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v7...v8)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '8'
  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>

.github/workflows/deploy-docs.yml

@@ -45,7 +45,7 @@ jobs:
         run: |
           rm -rf ./site
           mkdir ./site
-      - uses: actions/download-artifact@v7
+      - uses: actions/download-artifact@v8
         with:
           path: ./site/
           pattern: docs-site-*

.github/workflows/smokeshow.yml

@@ -28,7 +28,7 @@ jobs:
             pyproject.toml
             uv.lock
       - run: uv sync --locked --no-dev --group github-actions
-      - uses: actions/download-artifact@v7
+      - uses: actions/download-artifact@v8
         with:
           name: coverage-html
           path: htmlcov

.github/workflows/test.yml

@@ -176,7 +176,7 @@ jobs:
       - name: Install Dependencies
         run: uv sync --locked --no-dev --group tests --extra all
       - name: Get coverage files
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           pattern: coverage-*
           path: coverage