[libcxx-commits] [libcxx] [libc++][doc] Update the release notes for LLVM 18 (PR #78324)

[Konstantin Varlamov via libcxx-commits]

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@@ -35,9 +35,25 @@ see the `releases page <https://llvm.org/releases/>`_.
 What's New in Libc++ 18.0.0?
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var-const wrote:

Can you please also include the additions to the release notes from https://github.com/llvm/llvm-project/pull/78561 ?

https://github.com/llvm/llvm-project/pull/78324