deploy: better error message if token already on V2

```
deployed ESPRESSO_SEQUENCER_ESP_TOKEN_V2_ADDRESS at 0x29a79095352a718b3d7fe84e1f14e9f34a35598e
Error: server returned an error response: error code 3: execution reverted, data: "0xf92ee8a9"
```

The error is `InvalidInitialization`.

We should check the version and abort with clear message if we're already on V2.