Bump dawidd6/action-download-artifact from 3 to 6 in /.github/workflows

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 3 to 6.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](dawidd6/action-download-artifact@v3...v6)

---
updated-dependencies:
- dependency-name: dawidd6/action-download-artifact
  dependency-version: '6'
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/apply-benchmark-patch.yml

@@ -30,7 +30,7 @@ jobs:
           echo "${{ secrets.GITHUB_TOKEN }}" | gh auth login --with-token
 
       - name: Download latest bench patch artifact from heavy workflow
-        uses: dawidd6/action-download-artifact@v3
+        uses: dawidd6/action-download-artifact@v6
         with:
           workflow: run-benchmarks.yml
           pr: ${{ github.event.pull_request.number }}