Mark SWIFT_STRICT_CONCURRENCY to complete

Kingfisher.xcodeproj/project.pbxproj

@@ -1125,6 +1125,7 @@
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_INSTALL_OBJC_HEADER = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_STRICT_CONCURRENCY = complete;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4,7";
 				VERSIONING_SYSTEM = "apple-generic";
 			};
@@ -1185,6 +1186,7 @@
 				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
 				SWIFT_INSTALL_OBJC_HEADER = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_STRICT_CONCURRENCY = complete;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4,7";
 				VERSIONING_SYSTEM = "apple-generic";
 			};