message: sdk38: Use assert util in gov module test
diff: /* eslint-disable @typescript-eslint/naming-convention */
  -import { sleep } from "@cosmjs/utils";
  +import { assert, sleep } from "@cosmjs/utils";
  import { coins } from "../coins";
  import { isPostTxFailure } from "../cosmosclient";
  @@ -67,9 +67,7 @@ describe("GovExtension", () => {
  };
  const proposalReceipt = await client.postTx(proposalTx);
  - if (isPostTxFailure(proposalReceipt)) {
  - throw new Error("Proposal submission failed");
  - }
  + assert(!isPostTxFailure(proposalReceipt));
  proposalId = proposalReceipt.logs[0].events
  .find(({ type }) => type === "submit_proposal")!
  .attributes.find(({ key }) => key === "proposal_id")!.value;
  