Fix bugs for inference on Baskerville

[J-Dymond]

• pip install --upgrade "protobuf<=3.20.1"
• minor changes to inference scripts
• make_ocr_data includes value_error exception
• load_multieurlex_for_pipeline updated output structure in map()
• minor change to ocr_error inputs
• change within ocr_error
• in RecognitionVariationalPipeline define the model after calling super().__init__()
• updated input arguments for recognition functions in RTCVariationalPipeline
• minor changes to recognise and get_ocr_confidence