Merge pull request #39005 from apple/shahmishal-patch-1

Update the Simulator device to iPhone 12

Author: shahmishal

test/lit.cfg

@@ -99,7 +99,7 @@ def get_simulator_command(run_os, run_cpu):
             else:
                 return "simctl spawn --standalone 'iPhone 5'"
         else:
-            return "simctl spawn --standalone 'iPhone 8'"
+            return "simctl spawn --standalone 'iPhone 12'"
     elif run_os == 'tvos':
         return "simctl spawn --standalone 'Apple TV'"
     elif run_os == 'watchos':