Release 2.2.4

Solidity upgrade and Hardhat task refactor

• Upgraded Solidity from 0.8.2 to 0.8.6
• Fixes to the over-boost and rewards tasks
• Refactor of Hardhat tasks
  • getSigner factory that will work against Defender Relay of the DEFENDER_API_KEY and DEFENDER_API_SECRET environment variables
  • have been set, else uses the IMPERSONATE environment variable if set, otherwise uses a random account.
  • getChain will resolve a Chain enum from hardhat network and config.
  • getNetworkAddress will resolve a contract name to an address across different chains
  • resolveAddress will resolve a contract name or token symbol to an address across different chains
  • resolveToken will resolve a token symbol and type to a Token object