fix(py): Support more complex schemas gemini

[AbeJLazaro]

I was doing a recommender system by myself, and I found that gemini do not support this kind of output_schemas:

class Product(BaseModel):
    product_name: str = Field(description='name of the product')
    product_description: str = Field(description='description of the product')

class StoreSchema(BaseModel):
    store_name: str = Field(description='name of the store')
    products: list[Product] = Field(description='list of products in the store (5 to 10)')

So I decided to generate the bugfix

Checklist (if applicable):

• [X] PR title is following https://www.conventionalcommits.org/en/v1.0.0/
• [X] Tested (manually, unit tested, etc.)
• [ ] Docs updated (updated docs or a docs bug required)