Changes since checkpoint==2.1.2
- release: Checkpointers 3.0 (#6313)
- chore: Restrict "json" type deserialization (#6269)
- feat: adding cursory Python 3.14 support (#6298)
- style: fixes for ref docs (#6297)
- chore: drop Python 3.9 (and syntax) (#6289)
- docs: style linting (#6260)
- fix: rename away from LangGraph Platform (#6281)
