Update to 1.5.27

Add patch for Python 3.12 support
Use SPDX License

python-pyglet-imp.patch

@@ -0,0 +1,21 @@
+diff -up pyglet-1.5.27/tests/integration/test_toplevel_imports.py.imp pyglet-1.5.27/tests/integration/test_toplevel_imports.py
+--- pyglet-1.5.27/tests/integration/test_toplevel_imports.py.imp	2023-06-17 07:55:27.061254060 -0600
++++ pyglet-1.5.27/tests/integration/test_toplevel_imports.py	2023-06-17 08:01:50.139739485 -0600
+@@ -5,7 +5,7 @@
+ This _must_ be the first test run.
+ '''
+ 
+-import imp
++import importlib
+ import unittest
+ 
+ import pyglet
+@@ -47,7 +47,7 @@ def add_module_tests(name, bases, dict):
+         def create_test(components):
+             def test_module(self):
+                 top = pyglet
+-                imp.reload(top)
++                importlib.reload(top)
+                 for component in components:
+                     self.assertTrue(hasattr(top, component),
+                       'Cannot access "%s" in "%s"' % (component, top.__name__))