Prefer .T over np.transpose() for matrix transposition

[SaFE-APIOpt]

https://github.com/riccardoscalco/Pykov/blob/56abc5be18195378fdc3ffc8cc0fbefd55bb43ee/pykov.py#L1335 In the line: numpy_A_trans = numpy.transpose(numpy_A) it's recommended to use the shorthand .T instead: numpy_A_trans = numpy_A.T .T provides the same result as np.transpose() for 2D arrays, but with less overhead since it directly accesses the array's transpose attribute rather than calling a function. It also improves code readability and follows the idiomatic style in NumPy-based codebases.

This change improves both performance and clarity without affecting functionality.