'str' object has no attribute 'toordinal'

Describe the bug Hi!

After the latest update (0.10.24), it looks like querying for dates, using strings, is no longer working.

• My field is of type ormar.Date(nullable=True).
• Calling await MyModel.objects.get(field=value) fails when the value is '2022-01-20'
• Calling await MyModel.objects.get(field=parse_date(value)) works when the value is ^

Querying with the plain string value worked before (on 10.23).

Stack trace

../../.virtualenvs/project/lib/python3.10/site-packages/ormar/queryset/queryset.py:948: in get
    return await self.filter(*args, **kwargs).get()
../../.virtualenvs/project/lib/python3.10/site-packages/ormar/queryset/queryset.py:968: in get
    rows = await self.database.fetch_all(expr)
../../.virtualenvs/project/lib/python3.10/site-packages/databases/core.py:149: in fetch_all
    return await connection.fetch_all(query, values)
../../.virtualenvs/project/lib/python3.10/site-packages/databases/core.py:271: in fetch_all
    return await self._connection.fetch_all(built_query)
../../.virtualenvs/project/lib/python3.10/site-packages/databases/backends/postgres.py:174: in fetch_all
    rows = await self._connection.fetch(query_str, *args)
../../.virtualenvs/project/lib/python3.10/site-packages/asyncpg/connection.py:601: in fetch
    return await self._execute(
../../.virtualenvs/project/lib/python3.10/site-packages/asyncpg/connection.py:1639: in _execute
    result, _ = await self.__execute(
../../.virtualenvs/project/lib/python3.10/site-packages/asyncpg/connection.py:1664: in __execute
    return await self._do_execute(
../../.virtualenvs/project/lib/python3.10/site-packages/asyncpg/connection.py:1711: in _do_execute
    result = await executor(stmt, None)
asyncpg/protocol/protocol.pyx:183: in bind_execute
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

>   ???
E   asyncpg.exceptions.DataError: invalid input for query argument $2: '2022-01-20' ('str' object has no attribute 'toordinal')

Let me know if you want me to try and create a reproducible example. I thought I would open the issue first, in case you immediately knew what might have changed.

Thanks for maintaining the package! 👏