Python: adjust test expectations

We now locate a `DataFlow::Node` rather than an 'AstNode`.

Author: yoff

python/ql/test/2/query-tests/Exceptions/raising/RaisingTuple.expected

@@ -1,3 +1,3 @@
-| test.py:8:5:8:12 | Raise | Raising $@ will result in the first element (recursively) being raised and all other elements being discarded. | test.py:7:10:7:29 | Tuple | a tuple |
-| test.py:11:5:11:32 | Raise | Raising $@ will result in the first element (recursively) being raised and all other elements being discarded. | test.py:11:12:11:31 | Tuple | a tuple |
-| test.py:15:5:15:23 | Raise | Raising $@ will result in the first element (recursively) being raised and all other elements being discarded. | test.py:14:10:14:19 | Tuple | a tuple |
+| test.py:8:5:8:12 | Raise | Raising $@ will result in the first element (recursively) being raised and all other elements being discarded. | test.py:7:10:7:29 | ControlFlowNode for Tuple | a tuple |
+| test.py:11:5:11:32 | Raise | Raising $@ will result in the first element (recursively) being raised and all other elements being discarded. | test.py:11:12:11:31 | ControlFlowNode for Tuple | a tuple |
+| test.py:15:5:15:23 | Raise | Raising $@ will result in the first element (recursively) being raised and all other elements being discarded. | test.py:14:10:14:19 | ControlFlowNode for Tuple | a tuple |