text: Title: Code for simple for throws PydanticImportError
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  **Code for Simple Form in README.md cannot be run**
  
  I was starting out with `streamlit-pydantic` and tried to run the code for the simple form given in the `README.md`, but I encountered an import error while running the simple example.
  
  ```python
  2023-07-21 20:33:40.546 Uncaught app exception
  Traceback (most recent call last):
    File "/Users/ayangangopadhyay/Documents/Projects/Expenditure_Dashboard/.venv/lib/python3.10/site-packages/streamlit/runtime/scriptrunner/script_runner.py", line 552, in _run_script
      exec(code, module.__dict__)
    File "/Users/ayangangopadhyay/Documents/Projects/Expenditure_Dashboard/simple_form.py", line 4, in <module>
      import streamlit_pydantic as sp
    File "/Users/ayangangopadhyay/Documents/Projects/Expenditure_Dashboard/.venv/lib/python3.10/site-packages/streamlit_pydantic/__init__.py", line 9, in <module>
      from .settings import StreamlitSettings
    File "/Users/ayangangopadhyay/Documents/Projects/Expenditure_Dashboard/.venv/lib/python3.10/site-packages/streamlit_pydantic/settings.py", line 4, in <module>
      from pydantic import BaseSettings
    File "/Users/ayangangopadhyay/Documents/Projects/Expenditure_Dashboard/.venv/lib/python3.10/site-packages/pydantic/__init__.py", line 207, in __getattr__
      return _getattr_migration(attr_name)
    File "/Users/ayangangopadhyay/Documents/Projects/Expenditure_Dashboard/.venv/lib/python3.10/site-packages/pydantic/_migration.py", line 288, in wrapper
      raise PydanticImportError(
  pydantic.errors.PydanticImportError: `BaseSettings` has been moved to the `pydantic-settings` package. See https://docs.pydantic.dev/2.0.3/migration/#basesettings-has-moved-to-pydantic-settings for more details.
  
  For further information visit https://errors.pydantic.dev/2.0.3/u/import-error
  ```
  
  The code I am trying to run is exactly the one given for the simple form - 
  ```python
  import streamlit as st
  from pydantic import BaseModel
  import streamlit_pydantic as sp
  
  class ExampleModel(BaseModel):
      some_text: str
      some_number: int
      some_boolean: bool
  
  data = sp.pydantic_form(key="my_form", model=ExampleModel)
  if data:
      st.json(data.json())
  ```
  
  **Expected behaviour:**
  
  Rendering a simple form with `streamlit-pydantic`.
  
  **Steps to reproduce the issue:**
  
  1. Create a `.venv`  
  2. Install required dependencies
  3.  Create the `simple_form.py` file using the above code or copying it from the `README.md`
  4.  `streamlit run simple_form.py`
  
  -->
  
  **Technical details:**
  
  - Host Machine OS (Windows/Linux/Mac): Mac
  - Browser (Chrome/Firefox/Safari): Arc/Mozilla
  - Python Version: 3.10.8
  - streamlit-pydantic Version: 0.6.0
  - streamlit: 1.24.1
  
  Please let me know if any further details are required, and I will be happy to provide them. Thanks!