method_decorator should accept list first argument

[PeterJCLaw]

The following code is valid, but yields a warning I think is incorrect:

from django.utils.decorators import method_decorator
from wherever import decorator_1, decorator_2

new_decorator = method_decorator(
    [
        decorator_1,
        decorator_2,
    ],
    name='dispatch',
)

errors with:

Argument 1 to "method_decorator" has incompatible type "List[Any]"; expected "Union[Callable[..., Any], Set[Callable[..., Any]], Tuple[Callable[..., Any], Callable[..., Any]]]"

I'm guessing the fix is to add List or perhaps Sequence or Container into the allowed container types in the union. (If you agree that's a good solution I'd be happy to put up a PR)