Changes to Extractive question answering

the model request property const value kanon-answer-extractor was added

removed the enum value kanon-answer-extractor of the request property model

removed the enum value kanon-answer-extractor-mini of the request property model

the query request property's maxLength was increased from 5000 to 10000000

the chunking_options/oneOf[subschema #1: Chunking options]/overlap_tokens/oneOf[subschema #1: Non-negative integer] request property's min was set to 0.00

endpoint added