Pydantic 2 Support

[zsimjee]

Describe the bug
Pydantic 2.x.x is the default-installed version of pydantic.

To Reproduce
Steps to reproduce the behavior:

1. RAIL spec - N/A
2. Runtime arguments (e.g. guard(...)) - N/A
3. Pydantic version 2.0.3

Expected behavior
Guardrails should not throw errors when using the default and newest version of pydantic.

Library version:
Pydantic version 2.0.3

[RaghuSanjeev]

You observe the following error with guardrails package and latest Pydantic version.
"importerror: cannot import name 'modelfield' from 'pydantic.fields'

[justinwiley]

For others struggling this, this seems to install a compatible version:

pip install pydantic==1.10

[movchan74]

Are there plans to support Pydantic 2?

[qikangchen-fraunhofer]

Is this still active? I am currently working with gradio and the latest versions need Pydantic 2. It would be need if you can implement it! Thanks in advance.

[irgolic]

Fixed by #420