chore(deps): update github artifact actions to v8

Author: renovate[bot]

.github/workflows/tests.yml

@@ -49,7 +49,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Download coverage report
-        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
         with:
           name: coverage-report