Bump dawidd6/action-download-artifact from 7 to 8 (#1302)

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 7 to 8.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](dawidd6/action-download-artifact@v7...v8)

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

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

.github/workflows/shadow-repo-update.yml

@@ -47,7 +47,7 @@ jobs:
     steps:
       - name: Download built site
         id: download_site
-        uses: dawidd6/action-download-artifact@v7
+        uses: dawidd6/action-download-artifact@v8
         with:
           name: site
           run_id: ${{ github.event.workflow_run.id }}
@@ -82,7 +82,7 @@ jobs:
     steps:
       - name: Download comment text
         id: download_comment
-        uses: dawidd6/action-download-artifact@v7
+        uses: dawidd6/action-download-artifact@v8
         with:
           name: comment
           run_id: ${{ github.event.workflow_run.id }}