Swap: `verify` task fails

[`verify`](https://github.com/zeta-chain/template/blob/c45c18de2f847ec1d8fa787eb571cecba85c3dc4/tasks/verify.ts) fails:

```
npx hardhat verify:zeta --contract 0x70c76D6740d08e908097B458026eF37e5E275f25

? Select a contract to verify: contracts/ZetaSwapV2.sol:ZetaSwapV2
❌ Error during contract verification: Cannot read properties of undefined (reading 'missing')
```