I noticed that the contracts that are in the repository for testing are quite old. Questions: * does the Readme in testdata file contain accurate instructions for getting the latest contracts? * should we be updating the contracts to let's say... 2.2.0? * If not, why not? Should we be running tests against all of the contracts here: * https://github.com/CosmWasm/cosmwasm/tree/main/contracts why or why not?