Fix artifacts

Author: tstellar

.github/workflows/premerge.yaml

@@ -103,7 +103,7 @@ jobs:
         if: '!cancelled()'
         uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
         with:
-          name: Premerge Artifacts (Linux)
+          name: Premerge Artifacts (Linux ${{ runner.arch }})
           path: artifacts/
           retention-days: 5
           include-hidden-files: 'true'