build: use xcode 13

MarshallOfSound · MarshallOfSound · commit 8384406e55ee · 2022-10-18T15:57:14.000-07:00
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -36,7 +36,7 @@ jobs:
     <<: *steps-test
   test-mac:
     macos:
-      xcode: "12.5.0"
+      xcode: "13.3.0"
     <<: *steps-test
   test-windows:
     executor:
