upload-artifact@v4 and download-artifact@v4 are not supported on GHES. Also drop merge-multiple (v4-only) and adjust release glob to artifacts/*/*. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
upload-artifact@v4 and download-artifact@v4 are not supported on GHES. Also drop merge-multiple (v4-only) and adjust release glob to artifacts/*/*. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>