update actix-web dependency to 4.0

actix-cors/src/builder.rs

@@ -578,7 +578,7 @@ mod test {
         dev::{fn_service, Transform},
         http::{header::HeaderName, StatusCode},
         test::{self, TestRequest},
-        web::HttpResponse,
+        HttpResponse,
     };
 
     use super::*;

actix-cors/src/inner.rs

@@ -360,7 +360,7 @@ mod test {
             })
             .allow_any_method()
             .allow_any_header()
-            .new_transform(test::simple_service(StatusCode::NO_CONTENT))
+            .new_transform(test::status_service(StatusCode::NO_CONTENT))
             .await
             .unwrap();