cosmwasm-stargate: Use SignDoc helper from amino

packages/cosmwasm-stargate/src/signingcosmwasmclient.ts

@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/naming-convention */
-import { encodeSecp256k1Pubkey } from "@cosmjs/amino";
+import { encodeSecp256k1Pubkey, makeSignDoc as makeSignDocAmino } from "@cosmjs/amino";
 import {
   ChangeAdminResult,
   CosmWasmFeeTable,
@@ -13,7 +13,7 @@ import {
 } from "@cosmjs/cosmwasm-launchpad";
 import { sha256 } from "@cosmjs/crypto";
 import { fromBase64, toHex, toUtf8 } from "@cosmjs/encoding";
-import { CosmosFeeTable, makeSignDoc as makeSignDocAmino } from "@cosmjs/launchpad";
+import { CosmosFeeTable } from "@cosmjs/launchpad";
 import { Int53, Uint53 } from "@cosmjs/math";
 import {
   EncodeObject,