Update correct notebooks for PNCCD to use new CALCAT interface.
Related to https://git.xfel.eu/calibration/planning/-/issues/150
notebooks/pnCCD/pnCCD_retrieve_constants_precorrection.ipynb:
notebooks/pnCCD/pnCCD_retrieve_constants_precorrection.ipynb
notebooks/pnCCD/Correct_pnCCD_NBC.ipynb:
notebooks/pnCCD/Correct_pnCCD_NBC.ipynb
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