Add newer supported Xcode versions

Author: keith

utils/build-script

@@ -57,7 +57,9 @@ _SUPPORTED_XCODE_BUILDS = [
     ("13.1 RC 1", "13A1030d"),
     ("13.2 beta", "13C5066c"),
     ("13.2.1", "13C100"),
-    ("13.3", "13E113")
+    ("13.3", "13E113"),
+    ("13.3.1", "13E500a"),
+    ("13.4", "13F17a"),
 ]
 
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