Merge pull request #38681 from apple/update-xcode-version-xcode-13-beta4

Update the Xcode version to support Xcode 13 beta 4

Author: shahmishal

utils/build-script

@@ -56,7 +56,8 @@ _SUPPORTED_XCODE_BUILDS = [
     ("12.3", "12C33"),
     ("12.4", "12D4e"),
     ("12.5", "12E262"),
-    ("13.0 beta", "13A5154h")
+    ("13.0 beta", "13A5154h"),
+    ("13.0 beta 4", "13A5201i")
 ]
 
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