Implement equivalent patch to upstream python/cpython#14268

src/connection.h

@@ -85,11 +85,10 @@ typedef struct
      */
     PyObject* text_factory;
 
-    /* remember references to functions/classes used in
-     * create_function/create/aggregate, use these as dictionary keys, so we
-     * can keep the total system refcount constant by clearing that dictionary
-     * in connection_dealloc */
-    PyObject* function_pinboard;
+    /* remember references to functions/classes used in trace/progress/auth cb */
+    PyObject* function_pinboard_trace_callback;
+    PyObject* function_pinboard_progress_handler;
+    PyObject* function_pinboard_authorizer_cb;
 
     /* a dictionary of registered collation name => collation callable mappings */
     PyObject* collations;