QA: wallet_taproot: Ensure transaction created by sendall has enough fee to get into the mempool

Fixes intermittent issue exposed by "Wallet: Increase default confirmation target to 144"

Author: luke-jr

test/functional/wallet_taproot.py

@@ -378,7 +378,7 @@ def do_test_psbt(self, comment, pattern, privmap, treefn, keys_pay, keys_change)
             assert psbt_online.gettransaction(txid)['confirmations'] > 0
 
         # Cleanup
-        psbt = psbt_online.sendall(recipients=[self.boring.getnewaddress()], psbt=True)["psbt"]
+        psbt = psbt_online.sendall(recipients=[self.boring.getnewaddress()], psbt=True, conf_target=1, estimate_mode='conservative')["psbt"]
         res = psbt_offline.walletprocesspsbt(psbt=psbt, finalize=False)
         rawtx = self.nodes[0].finalizepsbt(res['psbt'])['hex']
         txid = self.nodes[0].sendrawtransaction(rawtx)