Take a look at https://github.com/code-423n4/2024-03-zksync/blob/4f0ba34f34a864c354c7e8c47643ed8f4a250e13/code/contracts/ethereum/contracts/state-transition/chain-deps/facets/Admin.sol#L22-L42
Both functions are all used in the logic to update the admins.
Now consider this scenario:
Low, since this overall depends on the current admin setting an address that could become malicious as the pending admin (or a wrong address)
Consider implementing timelocks to the whole logic, i.e if pending admin does not accept their admin status in 1 day, it should be automatically revoked.
