Upgrade to numpy > 2.0. Replace np.in1d to np.isin

[adinathaandreas-mobilus]

Hi, thanks for the wonderful package. I am currently running this for my project that necessitates using numpy >= 2.4.0
It worked fine on Numpy 2.2.0, and I discovered that the following lines:

dynamicTreeCut/dynamicTreeCut/dynamicTreeCut.py

Line 712 in 3734243

useObjects = np.in1d(ColorsX, np.unique(labelsOnBranch))

dynamicTreeCut/dynamicTreeCut/dynamicTreeCut.py

Line 756 in 3734243

useObjects = np.in1d(ColorsX, np.unique(labelsOnBranch))

is outdated since np.in1d is deprecated, and now replaced by np.isin in the newer version NumPy.

I have created the following PR. #14

Thanks in advance.