patch 9.1.0521: if_py: _PyObject_CallFunction_SizeT is dropped in Python 3.13

Problem:  if_py: _PyObject_CallFunction_SizeT is dropped in Python 3.13
Solution: define PyObject_CallFunction for Python >= 3.13
          (Yaakov Selkowitz)

references: python/cpython#105051

closes: #15088

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index ec993ab..7e4b647 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    521,
+/**/
     520,
 /**/
     519,