Add NEWS.md entry for change noted in #39589

NEWS.md

@@ -164,6 +164,10 @@ Standard library changes
   results table ([#38042]).
 * `@testset` now supports the option `verbose` to show the test result summary
   of the children even if they all pass ([#33755]).
+* In `LinearIndices(::Tuple)` and `CartesianIndices(::Tuple)`, integers (as opposed to ranges of integers) in the
+  argument tuple now consistently describe 1-based ranges, e.g, `CartesianIndices((3, 1:3))` is equivalent to
+  `CartesianIndices((1:3, 1:3))`. This is how tuples of integers have always been documented to work, but a
+  bug had caused erroneous behaviors with heterogeneous tuples containing both integers and ranges ([#37829], [#37928]).
 
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