Dependency typing change fix

[dmdunla]

Here is a recent type error from the regression tests:

yttb/tensor.py:1394: error: Incompatible types in assignment (expression has type "ndarray[tuple[int, ...], dtype[Any]]", variable has type "list[ndarray[tuple[int, ...], dtype[Any]]]")  [assignment]

Here is the offending code:

1391            combos = []
1392            for i in range(0, ngrps):
1393                combos.append(np.array(list(permutations(grps[i, :]))))
1394            combos = np.stack(combos)

I do not think we need to use np.stack.