fix(client-utils): lower the default fee to 0.015 BLD for smart wallet

update tests as well

Author: LuqiPan

packages/client-utils/src/signing-smart-wallet-kit.ts

@@ -59,7 +59,7 @@ type WalletStoreEntryProxy<T, Recursive extends true | false = false> = {
 
 // TODO parameterize as part of https://github.com/Agoric/agoric-sdk/issues/5912
 const defaultFee: StdFee = {
-  amount: [{ denom: 'ubld', amount: '500000' }], // XXX enough?
+  amount: [{ denom: 'ubld', amount: '15000' }], // XXX enough?
   gas: '19700000',
 };
 

packages/client-utils/test/signing-smart-wallet-kit.test.ts

@@ -96,7 +96,7 @@ test('sendBridgeAction handles simple action', async t => {
         },
       },
     ],
-    fee: { amount: [{ denom: 'ubld', amount: '500000' }], gas: '19700000' },
+    fee: { amount: [{ denom: 'ubld', amount: '15000' }], gas: '19700000' },
   });
 });
 
@@ -174,7 +174,7 @@ test('sendBridgeAction uses explicit signing when signerData provided', async t
         },
       },
     ],
-    fee: { amount: [{ denom: 'ubld', amount: '500000' }], gas: '19700000' },
+    fee: { amount: [{ denom: 'ubld', amount: '15000' }], gas: '19700000' },
     memo: 'test memo',
     signerData,
   });