fix: differ seed for different test contract

Author: allformless

test/utils/Deployer.sol

@@ -75,7 +75,7 @@ contract Deployer is Test {
 
     address payable public relayer;
 
-    bytes32 internal nextUser = keccak256(abi.encodePacked("user address"));
+    bytes32 internal nextUser = keccak256(abi.encodePacked("user address", address(this)));
 
     event paramChange(string key, bytes value);