C++: Add change note.

MathiasVP · MathiasVP · commit 8d3e84547417 · 2023-06-29T15:32:48.000+01:00
diff --git a/cpp/ql/lib/change-notes/2023-06-29-deprecate-ast-dataflow.md b/cpp/ql/lib/change-notes/2023-06-29-deprecate-ast-dataflow.md
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+---
+category: deprecated
+---
+* The library `semmle.code.cpp.dataflow.DataFlow` has been deprecated. Please use `semmle.code.cpp.dataflow.new.DataFlow` instead.

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+Diff line change
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 +---
 +category: deprecated
 +---
 +* The library `semmle.code.cpp.dataflow.DataFlow` has been deprecated. Please use `semmle.code.cpp.dataflow.new.DataFlow` instead.