Bump dawidd6/action-download-artifact from 2 to 6 in /.github/workflows (#1393)

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 2 to 6.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](https://github.com/dawidd6/action-download-artifact/compare/v2...v6)

---
updated-dependencies:
- dependency-name: dawidd6/action-download-artifact
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/deploy-preview.yml

@@ -45,7 +45,7 @@ jobs:
             const file = directory.files.find(d => d.path === 'pr_number');
             const content = await file.buffer();
             return content.toString();
-      - uses: dawidd6/action-download-artifact@v2
+      - uses: dawidd6/action-download-artifact@v6
         with:
           github_token: ${{secrets.GITHUB_TOKEN}}
           workflow: build-preview.yml