checkpoint: Add support for serializing more python types #1357

Job	Run time
build	5s
lint-js (libs/sdk-js)	16s
CLI integration test / CLI integration test (3.10)	4s
CLI integration test / CLI integration test (3.11)	6s
cd libs/checkpoint / test #3.9	16s
cd libs/checkpoint-postgres / test #3.9	6s
cd libs/checkpoint / test #3.10	25s
cd libs/checkpoint-postgres / test #3.10	7s
cd libs/checkpoint / test #3.11	17s
cd libs/checkpoint-postgres / test #3.11	5s
cd libs/checkpoint / test #3.12	12s
cd libs/checkpoint-postgres / test #3.12	6s
cd libs/checkpoint-sqlite / test #3.9	3s
cd libs/checkpoint / lint #3.9	17s
cd libs/checkpoint-sqlite / test #3.10	5s
cd libs/checkpoint / lint #3.11	16s
cd libs/checkpoint-sqlite / test #3.11	4s
cd libs/cli / test #3.9	3s
cd libs/checkpoint-sqlite / test #3.12	4s
cd libs/cli / test #3.10	6s
cd libs/langgraph / test #3.9	4s
cd libs/langgraph / test #3.10	6s
cd libs/cli / test #3.11	7s
cd libs/langgraph / test #3.11	6s
cd libs/cli / test #3.12	3s
cd libs/langgraph / test #3.12	4s
cd libs/checkpoint-postgres / lint #3.9	4s
cd libs/checkpoint-postgres / lint #3.11	4s
cd libs/checkpoint-sqlite / lint #3.9	7s
cd libs/cli / lint #3.9	3s
cd libs/checkpoint-sqlite / lint #3.11	7s
cd libs/cli / lint #3.11	5s
cd libs/langgraph / lint #3.9	7s
cd libs/langgraph / lint #3.11	3s
cd libs/sdk-py / lint #3.9	7s
cd libs/sdk-py / lint #3.11	6s
CI Success	1s
	4m 27s

Provide feedback