Merge pull request #37872 from apple/shahmishal/update-supported-xcode-13-beta

Author: swift-ci

utils/build-script

@@ -59,7 +59,8 @@ _SUPPORTED_XCODE_BUILDS = [
     ("12.3", "12C33"),
     ("12.4", "12D4e"),
     ("12.5 beta 3", "12E5244e"),
-    ("12.5", "12E262")
+    ("12.5", "12E262"),
+    ("13.0 beta", "13A5154h")
 ]
 
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