SNAP: replace lxml versions to be compatible with Beremiz.
Forcing ubuntu20 python-lxml (4.5.0) package instead of PIP vesrion (4.9.1).
4.9.1 leads to derived variable types to appear as "derived" instead of real type name.
Problem happens with plcopen/variables_infos.ysl2 and plcopen/VariableInfoCollector.py.
No clue for now about what really breaks.
d7154640e957a27bc4b764f349a25ea4 cffi-1.11.2-cp27-cp27m-win32.whl