multi: bump btcd to taproot aware version

watchtower/lookout/justice_descriptor.go

@@ -228,6 +228,9 @@ func (p *JusticeDescriptor) assembleJusticeTxn(txWeight int64,
 			input.txOut.PkScript, justiceTxn, i,
 			txscript.StandardVerifyFlags,
 			nil, nil, input.txOut.Value,
+			txscript.NewCannedPrevOutputFetcher(
+				input.txOut.PkScript, input.txOut.Value,
+			),
 		)
 		if err != nil {
 			return nil, err

watchtower/lookout/justice_descriptor_test.go

@@ -269,7 +269,7 @@ func testJusticeDescriptor(t *testing.T, blobType blob.Type) {
 	justiceTxn.TxOut = outputs
 	txsort.InPlaceSort(justiceTxn)
 
-	hashCache := txscript.NewTxSigHashes(justiceTxn)
+	hashCache := input.NewTxSigHashesV0Only(justiceTxn)
 
 	// Create the sign descriptor used to sign for the to-local input.
 	toLocalSignDesc := &input.SignDescriptor{

watchtower/wtclient/backup_task.go

@@ -7,7 +7,6 @@ import (
 	"github.com/btcsuite/btcd/btcec/v2"
 	"github.com/btcsuite/btcd/btcutil"
 	"github.com/btcsuite/btcd/btcutil/txsort"
-	"github.com/btcsuite/btcd/txscript"
 	"github.com/btcsuite/btcd/wire"
 	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/input"
@@ -285,7 +284,7 @@ func (t *backupTask) craftSessionPayload(
 	}
 
 	// Construct a sighash cache to improve signing performance.
-	hashCache := txscript.NewTxSigHashes(justiceTxn)
+	hashCache := input.NewTxSigHashesV0Only(justiceTxn)
 
 	// Since the transaction inputs could have been reordered as a result of
 	// the BIP69 sort, create an index mapping each prevout to it's new