dev: Updating the contract proxy to the proxy which starknet is using

[ocdbytes]

Current Behaviour :
We are currently using a unsafe proxy implementation in zaun which is not a good standard.

Expected Behaviour :
We need to use the proxy contracts currently being used by starknet
Contract Link: https://etherscan.io/address/0xb8fde0c30b1376293027835688e7926c03253142#code

[Immanuelolivia1]

Hi @ocdbytes I'll like to work on this

[ocdbytes]

we can mark this as done @apoorvsadana