update notion pkg

[joscha]

brings in stevieflyer/pydantic-api-models-notion#18

which fixes:

results.98.Page.properties.MY_COLUMN_NAME.people.people.0
  Unable to extract tag using discriminator 'type' [type=union_tag_not_found, input_value={'object': 'user', 'id': ...4a6d-a9e3-.....'}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.11/v/union_tag_not_found