chore: bump version to 2.0.4#593

hotlong merged 2 commits intomainobjectstack-ai/spec:mainfrom

copilot/release-new-version-bab5a60c-24ed-4287-ac80-50c51455d2abobjectstack-ai/spec:copilot/release-new-version-bab5a60c-24ed-4287-ac80-50c51455d2abCopy head branch name to clipboard