andriikliachkin

In NetworkX 3.0, the `from_numpy_matrix` function was [removed](https://networkx.org/documentation/stable/release/release_3.0.html) and replaced with `from_numpy_array`. However, the dependency on `from_numpy_matrix` is still present in the `birkhoff_von_neumann_decomposition` function. Replacing it with `from_numpy_array` would solve...