chore(deps): update actions/download-artifact action to v8

Author: renovate[bot]

.github/workflows/release-metadata.yaml

@@ -138,7 +138,7 @@ jobs:
       contents: write
     steps:
       - name: Download all artifacts
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           path: /tmp/artifacts
           merge-multiple: true