Can use Hardhat EVM

[fulldecent]

Hardhat EVM not supports starting and stopping mining.

https://hardhat.org/hardhat-network/explanation/mining-modes.html#mining-modes

I think this makes this testing now possible using Hardhat EVM

Stakehouse/stakehouse-contracts/test/Token.test.js

Lines 198 to 199 in dc0bb9a

	// Verify that only one checkpoint is added per block.
	// This test case requires using Ganache instead of the Hardhat EVM.