feat: refactor validators and fields to support pydantic v2

[xiaobo8204]

Description

This PR aims to update Pydantic to the latest v2.10.6, and switch to use the new model_validator/Field/field_validator in the new Pydantic version.

Related Issue(s)

• Fixes feature: Update Pydantic to v2.10.5 and remove Deprecated validators #929

Checklist

• [Y] I've read the CONTRIBUTING guidelines.
• [Y] I've updated the documentation if applicable.
• [Y] I've added tests if applicable.
• [Y] @mentions of the person or team responsible for reviewing proposed changes.

[Pouyanpi]

@xiaobo8204 thanks for your contribution to NeMo Guardrails 👍🏻 would you please sign all your commits following the contributing guidelines. You should see a Verified tag for all your commits.

[Pouyanpi]

we should relax it a bit, probably >= 2.0

And I still need to see the reasons we were still supporting Pydantic 1.0, I'll get back to this later.

[xiaobo8204]

removed the extra log.text and hidden file, changed the version to >= 2.0, and signed the commit, thanks...

[Pouyanpi]

and <3.0

[Pouyanpi]

@xiaobo8204 Apologies for the delay in reviewing your PR.

The issue is that we currently don’t have proper tests for the code your PR affects. I’ll open a separate PR to add the necessary tests. Once that’s in place, we can rebase your branch and move forward from there. Thanks for your patience!

[Pouyanpi]

should be

    @classmethod
    def validate_environment(cls, self) -> "TRTLLM":
        """Validate that python package exists in environment."""
        try:
            # instantiate and attach the client
            self.client = TritonClient(self.server_url)

        except ImportError as err:
            raise ImportError(
                "Could not import triton client python package. "
                "Please install it with `pip install tritonclient[all]`."
            ) from err
        return self

[Pouyanpi]

should be

    @model_validator(mode="after")
    def validate_policy_ids(cls, self) -> "EvalConfig":
        """Validates the policy ids used in the interactions."""
        policy_ids = {policy.id for policy in self.policies}
        for interaction_set in self.interactions:
            for expected_output in interaction_set.expected_output:
                if expected_output.policy not in policy_ids:
                    raise ValueError(
                        f"Invalid policy id {expected_output.policy} used in interaction set."
                    )
            for policy_id in (
                interaction_set.include_policies + interaction_set.exclude_policies
            ):
                if policy_id not in policy_ids:
                    raise ValueError(
                        f"Invalid policy id {policy_id} used in interaction set."
                    )
        return self