Hardhat v2.13.1

This release adds support for the upcoming Shanghai hardfork. This hardfork is not enabled by default; if you want to use it, then you have to enable it in your Hardhat config:

module.exports = {
  networks: {
    hardhat: {
      hardfork: "shanghai"
    }
  }
}

Besides that, this version fixes a problem when importing scoped packages in a Yarn Berry monorepo that uses PnP (thanks @zouguangxian!)