Port `eurac_pv_farm_detection` UDFs to python3.11

[soxofaan]

per https://github.com/eu-cdse/openeo-cdse-infra/issues/767, eurac_pv_farm_detection benchmark was pinned down to python 3.8 in c1e55e6

failure:

  File "/opt/spark/work-dir/onnx_deps/onnxruntime/__init__.py", line 23, in <module>
    from onnxruntime.capi._pybind_state import ExecutionMode  # noqa: F401
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/spark/work-dir/onnx_deps/onnxruntime/capi/_pybind_state.py", line 32, in <module>
    from .onnxruntime_pybind11_state import *  # noqa
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ModuleNotFoundError: No module named 'onnxruntime.capi.onnxruntime_pybind11_state'

UDF should be ported to python 3.11

[soxofaan]

tentatively assigned to @jdries (based on git history)