[3.11] Update the magic number in test_util.py (GH-95714) (#95716)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>

Lib/test/test_importlib/test_util.py

@@ -860,7 +860,7 @@ def test_magic_number(self):
         # stakeholders such as OS package maintainers must be notified
         # in advance. Such exceptional releases will then require an
         # adjustment to this test case.
-        EXPECTED_MAGIC_NUMBER = 3413
+        EXPECTED_MAGIC_NUMBER = 3495
         actual = int.from_bytes(importlib.util.MAGIC_NUMBER[:2], 'little')
 
         msg = (