support Xcode 13.0 and 13.1 RC 1

(cherry picked from commit 9f0b643)

Author: WowbaggersLiquidLunch

utils/build-script

@@ -60,7 +60,9 @@ _SUPPORTED_XCODE_BUILDS = [
     ("12.5 beta 3", "12E5244e"),
     ("12.5", "12E262"),
     ("13.0 beta", "13A5154h"),
-    ("13.0 beta 4", "13A5201i")
+    ("13.0 beta 4", "13A5201i"),
+    ("13.0", "13A233"),
+    ("13.1 RC 1", "13A1030d")
 ]
 
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