[flang-commits] [flang] [flang][ReleaseNotes] Add `do concurrent` parallelizatio note (PR #182821)

[Tom Eccles via flang-commits]

tblah wrote:

Would you consider making this a PR for the release branch instead of main so that this appears in the LLVM 22 release notes? As I understand it, all of the implementation work for this was landed before the branch date.

In this case we don't want the patch in both main and the release branch otherwise it will be on the release notes for both LLVM 22 and 23.

https://github.com/llvm/llvm-project/pull/182821