downgrade xcode version to 13.0 from 13.1

Image xcode:13.1 is not supported

Author: ShenYj

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2
 jobs:
   build-and-test:
     macos:
-      xcode: "13.1"
+      xcode: "13.0"
 
     steps:
       - checkout