Update class method deprecation warnings for Python 3.13

Update the version range for modified deprecation warnings that was
introduced in efb3e60, since Python
3.13 reverted the change originally introduced in 3.9 and is back to
the old messages.  This fixes tests with Python 3.13.

See also GrahamDumpleton/wrapt#260.

tests/test_deprecated.py

@@ -191,7 +191,7 @@ def test_classic_deprecated_class_method__warns(classic_deprecated_class_method)
     assert len(warns) == 1
     warn = warns[0]
     assert issubclass(warn.category, DeprecationWarning)
-    if sys.version_info >= (3, 9):
+    if (3, 9) <= sys.version_info < (3, 13):
         assert "deprecated class method" in str(warn.message)
     else:
         assert "deprecated function (or staticmethod)" in str(warn.message)

tests/test_sphinx.py

@@ -301,7 +301,7 @@ def test_sphinx_deprecated_class_method__warns(sphinx_deprecated_class_method):
     assert len(warns) == 1
     warn = warns[0]
     assert issubclass(warn.category, DeprecationWarning)
-    if sys.version_info >= (3, 9):
+    if (3, 9) <= sys.version_info < (3, 13):
         assert "deprecated class method" in str(warn.message)
     else:
         assert "deprecated function (or staticmethod)" in str(warn.message)