Changelog for the version

Feature and Enhancement
- feat(wren-ai-service): minimize the duration for empty document and async helper for model preprocessor (#990)
- feat(wren-ai-service): litellm integration (#946)

Fixes and Chores
- chore(wren-ai-service): refine ai service (#991)
- chore(wren-ai-service): use litellm as default llm provider (#987)
- chore(wren-ai-service): fix llm issues (#983)
- chore(wren-ai-service): fix changelog generation in ai service release workflow (#981)
- chore(wren-ai-service): update langfuse analysis (#978)
- chore(wren-ai-service): remove logger.debug (#973)
- chore(wren-ai-service): remove logger.debug messages (#972)
This tag has no release notes.