CI: Use latest macos images.

Author: scoder

.github/workflows/ci.yml

@@ -149,7 +149,7 @@ jobs:
       fail-fast: false
 
       matrix:
-        os: [macos-13, windows-latest]
+        os: [macos-latest, windows-latest]
         python-version:
           - "3.8"
           - "3.9"