add google-auth to pyproject.toml

[nmfisher]

The google-auth package isn't specified as a dependency in pyproject.toml, so litellm will fail with any gemini model:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/litellm/main.py", line 457, in acompletion
    response = await init_response
               ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 1030, in async_completion
    _auth_header, vertex_project = await self._ensure_access_token_async(
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 275, in _ensure_access_token_async
    self._credentials, cred_project_id = await asyncify(self.load_auth)(
                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/litellm/litellm_core_utils/asyncify.py", line 57, in wrapper
    return await anyio.to_thread.run_sync(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/anyio/to_thread.py", line 56, in run_sync
    return await get_async_backend().run_sync_in_worker_thread(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 2441, in run_sync_in_worker_thread
    return await future
           ^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 943, in run
    result = context.run(func, *args)
             ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 39, in load_auth
    import google.auth as google_auth
ModuleNotFoundError: No module named 'google.auth'

This also requires an update to poetry.lock, but I suspect you probably re-generate that regularly as other dependencies change. To be honest, I'm not sure why this isn't included as a transitive dependency of litellm but I haven't gone digging upstream to figure that out.

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Important

Add google-auth to pyproject.toml to resolve ModuleNotFoundError for Gemini models in litellm.

• Dependencies:
  • Add google-auth version ^2.37.0 to pyproject.toml to resolve ModuleNotFoundError for google.auth when using Gemini models in litellm.

^{This description was created by for 709f78d. It will automatically update as commits are pushed.}

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1. pyproject.toml:13

• Draft comment:
  Consider specifying a more precise version constraint for google-auth to avoid potential compatibility issues. For example, use "^2.37.0,<3.0" to ensure compatibility with future updates.
• Reason this comment was not posted:
  Confidence changes required: 50%
  The addition of google-auth to the dependencies list is correct given the error trace provided in the PR description. However, the version constraint should be more specific to avoid potential compatibility issues.

Workflow ID: wflow_bCcLL83l0HcnhIAz

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[suchintan]

@nmfisher I'd love to get this merged -- any chance you can regenerate poetry.lock? I'll merge it when the check passes!