Xcode 14.1 beta 1 requires macOS 12.5. (#15999)

Make.config

@@ -230,7 +230,7 @@ MAX_SHARPIE_VERSION=3.5.99
 MIN_SHARPIE_URL=https://download.visualstudio.microsoft.com/download/pr/7336f72c-57aa-4e46-9936-cce4d1975ba9/b33be8b36a22c2cfbcbe5680f14e0901/objectivesharpie-3.5.61.pkg
 
 # Minimum OSX versions for building XI/XM
-MIN_OSX_BUILD_VERSION=12.0
+MIN_OSX_BUILD_VERSION=12.5
 # Minimum OSX version for executing XI/XM tooling.
 MIN_OSX_VERSION_FOR_IOS=10.11
 MIN_OSX_VERSION_FOR_MAC=10.11