UDF handling broken for Python 3.9+ by xml.etree API change

[elgow]

The getchildren() method has been removed from xml.etree from python 3.9 (https://docs.python.org/3.8/library/xml.etree.elementtree.html#xml.etree.ElementTree.Element.getchildren)
resulting in the error

File ".../lib/python3.10/site-packages/genologics/descriptors.py", line 200, in _update_elems
for elem in self.rootnode.getchildren():
AttributeError: 'xml.etree.ElementTree.Element' object has no attribute 'getchildren'

Seems to be an easy fix as getchildren() is used in only two places

/Users/egow/.pyenv/versions/3.10.9/envs/LIMS-15796/lib/python3.10/site-packages/genologics
descriptors.py
for node2 in node.getchildren():
for elem in self.rootnode.getchildren():

PR to follow

[elgow]

Arleady resolved by commit 13199c0