message: fix(account-lib): fix trx fee limit boundary
  change trx fee limit upper boundary, from 1000TRX to 5000TRX
  stlx-4309
diff: @@ -26,7 +26,7 @@ import ContractType = protocol.Transaction.Contract.ContractType;
  const DEFAULT_EXPIRATION = 3600000; // one hour
  const MAX_DURATION = 31536000000; // one year
  -export const MAX_FEE = 1000000000; // 1e9 = 1000 TRX acording https://developers.tron.network/docs/setting-a-fee-limit-on-deployexecution
  +export const MAX_FEE = 5000000000; // 5e9 = 5000 TRX acording https://developers.tron.network/docs/setting-a-fee-limit-on-deployexecution
  export class ContractCallBuilder extends TransactionBuilder {
  protected _signingKeys: BaseKey[];
  