bump xcode version for ci

Brandon Sneed · Brandon Sneed · commit 7a3c0c86b4ae · 2021-05-07T10:52:31.000-07:00
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -3,7 +3,7 @@ version: 2
 jobs:
   build_and_test:
     macos:
-      xcode: "11.0"
+      xcode: "12.5"
     steps:
       - checkout
       - run: xcrun simctl list
