message: Use toUtf8 instead of toAscii in some test code
diff: import { sha256 } from "@cosmjs/crypto";
  -import { fromAscii, fromHex, toAscii, toHex } from "@cosmjs/encoding";
  +import { fromAscii, fromHex, toAscii, toHex, toUtf8 } from "@cosmjs/encoding";
  import { DirectSecp256k1HdWallet, OfflineDirectSigner, Registry } from "@cosmjs/proto-signing";
  import {
  assertIsDeliverTxSuccess,
  @@ -75,7 +75,7 @@ async function instantiateContract(
  sender: alice.address0,
  codeId: Long.fromNumber(codeId),
  label: "my escrow",
  - msg: toAscii(
  + msg: toUtf8(
  JSON.stringify({
  verifier: alice.address0,
  beneficiary: beneficiaryAddress,
  @@ -108,7 +108,7 @@ async function executeContract(
  value: MsgExecuteContract.fromPartial({
  sender: alice.address0,
  contract: contractAddress,
  - msg: toAscii(JSON.stringify(msg)),
  + msg: toUtf8(JSON.stringify(msg)),
  funds: [],
  }),
  };
  @@ -254,7 +254,7 @@ describe("WasmExtension", () => {
  jasmine.objectContaining({
  codeId: Long.fromNumber(hackatomCodeId, true),
  operation: ContractCodeHistoryOperationType.CONTRACT_CODE_HISTORY_OPERATION_TYPE_INIT,
  - msg: toAscii(
  + msg: toUtf8(
  JSON.stringify({
  verifier: alice.address0,
  beneficiary: beneficiaryAddress,
  