bpo-42800: Rename AUDIT_READ to PY_AUDIT_READ (GH-25736)

diff --git a/Python/traceback.c b/Python/traceback.c
index 5fa6e50..470324b 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -147,7 +147,7 @@ static PyMethodDef tb_methods[] = {
 };
 
 static PyMemberDef tb_memberlist[] = {
-    {"tb_frame",        T_OBJECT,       OFF(tb_frame),  READONLY|AUDIT_READ},
+    {"tb_frame",        T_OBJECT,       OFF(tb_frame),  READONLY|PY_AUDIT_READ},
     {"tb_lasti",        T_INT,          OFF(tb_lasti),  READONLY},
     {"tb_lineno",       T_INT,          OFF(tb_lineno), READONLY},
     {NULL}      /* Sentinel */