Bump dawidd6/action-download-artifact from 6 to 7

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 6 to 7.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](dawidd6/action-download-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: dawidd6/action-download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/deploy-preview.yaml

@@ -91,7 +91,7 @@ jobs:
           github.event.workflow_run.conclusion == 'success'
           && steps.find-pull-request.outputs.number != ''
           && steps.fc.outputs.comment-id != ''
-        uses: dawidd6/action-download-artifact@v6
+        uses: dawidd6/action-download-artifact@v7
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           workflow: build-book.yaml