Issue with new mypy

[cunla]

Hi, when using mypy 1.19.1, getting error with pynamodb plugin.

python/mypy#20746 (comment)

Traceback (most recent call last):
  File "mypy/checkexpr.py", line 6103, in accept
  File "mypy/checkexpr.py", line 6138, in accept_maybe_cache
  File "mypy/nodes.py", line 2289, in accept
  File "mypy/checkexpr.py", line 508, in visit_call_expr
  File "mypy/checkexpr.py", line 645, in visit_call_expr_inner
  File "mypy/checkexpr.py", line 1496, in check_call_expr_with_callee_type
  File "mypy/checkexpr.py", line 1589, in check_call
  File "mypy/checkexpr.py", line 1832, in check_callable_call
  File "mypy/checkexpr.py", line 1270, in apply_function_plugin
  File "/Users/style/cfa/d20-functions/.venv/lib/python3.12/site-packages/pynamodb_mypy/plugin.py", line 150, in _get_function_hook__pynamodb_attribute__init__
    self._inspect_pynamodb_attribute_init(ctx)
  File "/Users/style/cfa/d20-functions/.venv/lib/python3.12/site-packages/pynamodb_mypy/plugin.py", line 207, in _inspect_pynamodb_attribute_init
    attr_type = get_descriptor_access_type(ctx.context, internal_api, attr_instance)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/style/cfa/d20-functions/.venv/lib/python3.12/site-packages/pynamodb_mypy/_private_api.py", line 20, in get_descriptor_access_type
    mypy.checkmember.MemberContext(
TypeError: 'msg' is an invalid keyword argument for __init__()