feat: replace default json to orjson for better performance

[yihong0618]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

orjson is very fast and we already have it in the lock file, and orjson has the same api for python default json.

https://github.com/ijl/orjson

2. Additional context or comments

No response

3. Can you help us with this feature?

• I am interested in contributing to this feature.