How to define strict = True in schema using pydantic model

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How to define struct true using pydantic model in python.
Here is the code but I cant see strict true in schema

from pydantic import BaseModel, Field, conlist
from enum import Enum

class CategoryEnum(str, Enum):
    ecommerce = 'ecommerce'
    dropshipping = 'dropshipping'
    content_arbitrage = 'content_arbitrage'
    business_coaching = 'business_coaching'

class MyBaseModel(BaseModel):
    class Config:
        strict = True  # This is for runtime enforcement

class CategoriesAnnotation(MyBaseModel):
    multi_label_categories: list[conlist(CategoryEnum)] = Field(
        ...,
        description="A list of annotated multilabel categories."
    )
    class Config:
        json_schema_extra = {
            "additionalProperties": False
        }

# Generate the schema
schema = CategoriesAnnotation.schema()

print(schema)