Add version guard

Author: lysnikolaou

pandas/_libs/src/datetime/pd_datetime.c

@@ -246,7 +246,9 @@ static int pandas_datetime_exec(PyObject *Py_UNUSED(module)) {
 
 static PyModuleDef_Slot pandas_datetime_slots[] = {
     {Py_mod_exec, pandas_datetime_exec},
+#if PY_VERSION_HEX >= 0x030D0000
     {Py_mod_gil, Py_MOD_GIL_NOT_USED},
+#endif
     {0, NULL},
 };
 

pandas/_libs/src/parser/pd_parser.c

@@ -162,7 +162,9 @@ static int pandas_parser_exec(PyObject *Py_UNUSED(module)) {
 
 static PyModuleDef_Slot pandas_parser_slots[] = {
     {Py_mod_exec, pandas_parser_exec},
+#if PY_VERSION_HEX >= 0x030D0000
     {Py_mod_gil, Py_MOD_GIL_NOT_USED},
+#endif
     {0, NULL},
 };