changePriceFeedAddress
The changePriceFeedAddress function transfers the price feed power to the new contract address provided by the user.
function changePriceFeedAddress (address _new_address) public onlySecretary {
_new_address: The new chain link price feed contract address
CEGORAS egoras = CEGORAS(0xd9E373F....);require(egoras.changePriceFeedAddress(0xd9E373F...), "unable to changePriceFeedAddress");
const instance = await new web3.eth.Contract(abi, address)await instance.methods.changePriceFeedAddress("0xd9E373F..").send({from: 0xMyAccount});