Python: update pydantic version > 2

[joowon-dm-snu]

Many of the latest packages frequently use pydantic > 2.
But current pydantic in semantic-kernel use pydantic = "<2", causing ongoing version conflicts.
I suggest updating the package.

[joowon-dm-snu]

chromadb is using pydantic (>=1.9,<2.0).
The update is being carried out here. It would be great if SK could also be version-updated once this is done.

[nacharya1]

@awharrison-28 - can you look into these package updates and see if it makes sense for us to do.

[zooba]

Also worth checking whether you're using any features that actually changed. If you can get away without the version constraint at all, it makes your package more widely usable.

[cramatt]

Can't use because of this issue 😭

[eavanvalkenburg]

This was done!