v3.9.1

What's Changed

• feat(api): update API spec from langfuse/langfuse efe3532 by @langfuse-bot in #1425
• chore(deps-dev): bump langgraph-checkpoint from 2.1.2 to 3.0.0 by @dependabot[bot] in #1427
• feat(api): update API spec from langfuse/langfuse 25e6ad9 by @langfuse-bot in #1428

Full Changelog: v3.9.0...v3.9.1