Support for Pydantic 2

[Andrew S. Rosen]

I know @munrojm is already on this. This issue is mainly so I can keep tabs on when this is addressed :)

Related entries in the MP ecosystem:

• materialsvirtuallab/monty#548
• materialsproject/emmet#768
• materialsproject/jobflow#422
• materialsproject/pymatgen#3301

[Jason Munro]

Pydantic 2.0 is supported as of the latest release

[Matthew Horton]

Nice work on this! Hopefully it results in some good perf gains too :)