Reduce use of Any unless dynamic typing expected #3532

Follow up to a comment in #3528.

There is a lot of use of Any in various places where we should use something else.

In some cases we just haven't properly typed things and should probably consider using _typeshed.Incomplete.

It is also very common to default to using *args: Any and/or **kwargs: Any when neither are used within the function. If they are not used, or the function body doesn't care about their types, we should switch these to *args: object and **kwargs: object¹. We could also consider use of _typeshed.Unused.

If it's also helpful, we can consider _typeshed.MaybeNone.

Using the aliases from typeshed helps to provide some context that we don't get with Any alone.