Use MAX associated const (#9196)

* Use MAX associated const

substrate/frame/contracts/src/benchmarking/mod.rs

@@ -116,7 +116,7 @@ where
 				// storage_size cannot be zero because otherwise a contract that is just above
 				// the subsistence threshold does not pay rent given a large enough subsistence
 				// threshold. But we need rent payments to occur in order to benchmark for worst cases.
-				let storage_size = u32::max_value() / 10;
+				let storage_size = u32::MAX / 10;
 
 				// Endowment should be large but not as large to inhibit rent payments.
 				// Balance will only cover half the storage