github-actions: bump dawidd6/action-download-artifact from 9 to 11

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 9 to 11.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](dawidd6/action-download-artifact@v9...v11)

---
updated-dependencies:
- dependency-name: dawidd6/action-download-artifact
  dependency-version: '11'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/merge.yml

@@ -55,7 +55,7 @@ jobs:
         with:
           ref: main
       - name: Download artifact
-        uses: dawidd6/action-download-artifact@v9
+        uses: dawidd6/action-download-artifact@v11
         with:
           name: "${{ needs.create-coverage-name.outputs.coverage-name }}-coverage"
           branch: "${{ needs.make-tag.outputs.tag }}"