add regressions to changelog (NEWS.md) (#49883)

Co-authored-by: Kristoffer Carlsson <[email protected]>
Co-authored-by: Ian Butterworth <[email protected]>

NEWS.md

@@ -201,6 +201,11 @@ Tooling Improvements
 * Printing of `MethodError` and methods (such as from `methods(my_func)`) is now prettified and colored consistently
   with printing of methods in stacktraces ([#45069]).
 
+Regressions
+-----------
+
+A list of known regressions in the v1.9 release can be found [here](https://github.com/JuliaLang/julia/issues?q=+label%3A%22regression+1.9%22+)
+
 <!--- generated by NEWS-update.jl: -->
 [#28973]: https://github.com/JuliaLang/julia/issues/28973
 [#32310]: https://github.com/JuliaLang/julia/issues/32310