v3.9.1

What's Changed

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

Full Changelog: https://github.com/langfuse/langfuse-python/compare/v3.9.0...v3.9.1