https://github.com/code-423n4/2023-09-ondo/blob/main/contracts/usdy/rUSDYFactory.sol#L75
The rUSDY contract can be redeployed by the guardian by calling deployrUSDY() in the rUSDYFactory contract. This will deploy a new set of contracts and overwrite the storage variables that link to the contract.
It is recommended to add a check to avoid redeployment once contracts have been deployed.
