🐛 Fix type annotation in Field constructor

[AlanBogarin]

Type checker throw partially unknown error when used in strict mode (Pylance)
When I locally edited that line, everything was correct

the Column type needs a type argument, assign it Any to accept all instances of the object

origin: sqlmodel.main.Field
info: Column expected an argument

339 |    sa_column: Union[Column, UndefinedType] = Undefined,  # type: ignore

proposed change

339 |    sa_column: Union[Column[Any], UndefinedType] = Undefined,

If you want to see it yourself (be sure to set the type checker to strict)

import sqlmodel

class TestModel(sqlmodel.SQLModel, table=True):
    value: list[int] = sqlmodel.Field(sa_column=sqlmodel.Column(sqlmodel.JSON))

There is a better change, but it is not possible because Column was defined in sqlalchemy

# sqlalchemy.sql.schema
113 |    _T = TypeVar("_T", bound="Any", default="Any")  # python >= 3.13

[svlandeg]

Thanks for the contribution @AlanBogarin!

This looks good to me, but I'll leave the final review & decision up to Tiangolo.

[tiangolo]

Makes sense, thank you! ☕