Update dependency to @wharfkit/antelope instead of @greymass/eosio

[DenisCarriere]

Causing some Type conflicts when using latest @wharfkit/antelope

Example

import { TimePointSec } from '@wharfkit/antelope'
import { Blockchain } from '@eosnetwork/vert'

const blockchain = new Blockchain()

const time = TimePointSec.fromInteger(600);
await blockchain.addTime(time);

❌ Argument of type 'TimePointSec' is not assignable to parameter of type 'TimePoint | TimePointSec'.