Update to MacOS 13 in build jobs

Author: gestrich

.github/workflows/create_certs.yml

@@ -12,7 +12,7 @@ jobs:
   certificates:
     name: Create Certificates
     needs: validate
-    runs-on: macos-12
+    runs-on: macos-13
     steps:
       # Uncomment to manually select latest Xcode if needed
       #- name: Select Latest Xcode