Update CheckPythonVersion through Python 3.13

    - Add end date to support for Python 3.9
    - Add support values for Python 3.12 and Python 3.13
    - Add improved message for newer, untested versions of Python
    - Add test to identify failures to update CheckPythonVersion
    - Suppress test output for CheckPythonVersion in scripts

Author: eszmw

FunctionLibrary/CheckPythonVersion.mlx

@@ -4,6 +4,11 @@
 
     methods(Test)    
 
+        function IsKnownPythonVersion(testCase)
+            Known = CheckPythonVersion;
+            verifyTrue(testCase,Known)
+        end
+
     end % methods
 
 end % classdef

Scripts/CheckingTheWeather.mlx

@@ -1,2 +1,2 @@
-<?xml version='1.0' encoding='UTF-8'?>
+<?xml version="1.0" encoding="UTF-8"?>
 <Info Ref="" Type="Relative"/>

Scripts/UsingMATLABwithPython.mlx

@@ -1,2 +1,2 @@
-<?xml version='1.0' encoding='UTF-8'?>
+<?xml version="1.0" encoding="UTF-8"?>
 <Info location="400747ad-2cc8-4e26-924a-43ad608c9c8b" type="Reference"/>