ulab: update to 1.7.2

[jepler]

Closes #4086

Thanks to @v923z for a prompt fix to the underlying problem!

@bspsbee can you let us know if this change fixes your problem?

[bspsbee]

@bspsbee can you let us know if this change fixes your problem?

Output looks correct.

traditional                    :    2.349ms [result=3535.843611]
ulab, with ndarray, some implementation in python :    0.284ms [result=3535.853624]
ulab only, with list           :    0.166ms [result=3535.853624]
ulab only, with ndarray        :    0.073ms [result=3535.853624]