Updates all segwit inputs and outputs in a PSBT with data from output descriptors, the UTXO set or the mempool.
psbtstringREQUIREDdescriptorsarrayoptionalcurl --user myuser --data-binary '{"jsonrpc":"1.0","id":"1","method":"utxoupdatepsbt","params":["psbt_base64"]}' -H 'content-type:text/plain;' http://127.0.0.1:8332/"cHNidP8BAFUCAAAAAe...updated..."