message: fix(utxo-lib): export UtxoPsbt
  Issue:
diff: @@ -7,6 +7,7 @@ export * from './signature';
  export * from './transaction';
  export * from './types';
  export * from './Unspent';
  +export * from './UtxoPsbt';
  export * from './UtxoTransaction';
  export * from './UtxoTransactionBuilder';
  export * from './wallet';
  