Update operator key

forge script script/Operator/Middleware/OperatorMiddlewareScript.s.sol:OperatorMiddlewareScript \
    --rpc-url <RPC_URL> \
    --private-key <PRIVATE_KEY> \
    --sig "updateOperatorKey(address,address,bytes)" \
    <MIDDLEWARE_ADDRESS> \
    <OPERATOR_ADDRESS> \
    <OPERATOR_KEY> \
    --broadcast \
    --with-gas-price <GAS_PRICE>