fix test

Author: mmsaki

test/AsyncCSMM.t.sol

@@ -62,7 +62,7 @@ contract AsyncCsmmTest is SetupHook {
 
   function testFuzzAsyncSwapAndFillOrder(AsyncOrder memory order) public {
     vm.assume(order.amountIn >= 1);
-    vm.assume(order.amountIn < 2 ** 128 / 2);
+    vm.assume(order.amountIn < 2 ** 128 / 2 - 2);
     vm.assume(order.owner != address(manager));
     vm.assume(order.owner != address(hook));
     topUp(order.owner, order.amountIn);