message: Move ganache-core to main deps
diff: "@ethersproject/contracts": "^5.0.5",
  "@ethersproject/hardware-wallets": "^5.0.8",
  "@openzeppelin/contracts": "^3.3.0",
  - "ethers": "5.0.0"
  + "ethers": "5.0.0",
  + "ganache-core": "^2.12.1"
  },
  "devDependencies": {
  "@eth-optimism/smock": "^0.0.2",
  "copyfiles": "^2.3.0",
  "ethereum-waffle": "3.0.0",
  "fs-extra": "^9.0.1",
  - "ganache-core": "^2.12.1",
  "lodash": "^4.17.20",
  "merkle-patricia-tree": "^4.0.0",
  "mkdirp": "^1.0.4",
  