Fix Pydantic 2 warnings

[cmaddalozzo]

What this PR does / why we need it:
Currently Pydantic 2 is emitting two errors.

Field "model_name" has conflict with protected namespace "model_".

Type of changes
Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Currently these warnings are being emitted by Pydantic.

kserve/venv/lib/python3.11/site-packages/pydantic/_internal/_config.py:322
  /Users/cmaddalozzo/Code/kserve/python/kserve/venv/lib/python3.11/site-packages/pydantic/_internal/_config.py:322: UserWarning: Valid config keys have changed in V2:
  * 'json_loads' has been removed
    warnings.warn(message, UserWarning)

kserve/venv/lib/python3.11/site-packages/pydantic/_internal/_fields.py:151
  /Users/cmaddalozzo/Code/kserve/python/kserve/venv/lib/python3.11/site-packages/pydantic/_internal/_fields.py:151: UserWarning: Field "model_name" has conflict with protected namespace "model_".

  You may be able to resolve this warning by setting `model_config['protected_namespaces'] = ()`.
    warnings.warn(

kserve/venv/lib/python3.11/site-packages/pydantic/_internal/_fields.py:151
  /Users/cmaddalozzo/Code/kserve/python/kserve/venv/lib/python3.11/site-packages/pydantic/_internal/_fields.py:151: UserWarning: Field "model_version" has conflict with protected namespace "model_".

  You may be able to resolve this warning by setting `model_config['protected_namespaces'] = ()`.
    warnings.warn(

Special notes for your reviewer:

1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

Checklist:

• Have you added unit/e2e tests that prove your fix is effective or that this feature works?
• Has code been commented, particularly in hard-to-understand areas?
• Have you made corresponding changes to the documentation?

Release note:

[yuzisun]

/lgtm
/approve

[oss-prow-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cmaddalozzo, yuzisun

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