title: Integer and string cannot be distinguished with pydantic
body: <pre><code>from pydantic import BaseModel
  
  
  class AuthenticationResponseSchema(BaseModel):
      type: str
  </code></pre>
  <pre><code>schema = AuthenticationResponseSchema(type=1)
  </code></pre>
  <p>Now I'm changing marshmallow to pydantic for schema, model ...</p>
  <p>But pydantic schema did not validated <code>type</code> when data response.</p>
  <p>data type of <code>type</code> is string, but the integer passed too.</p>
  <p>what is wrong?</p>
  <p>Thank you.</p>