[clang] [clang][deps] Add a release note for fixing crashes in `clang-scan-deps`. (PR #149857)

[via cfe-commits]

llvmbot wrote:

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Failed to cherry-pick: dbc41dd5d827a3e13625a66fd2bfa83a8a4dfe83

https://github.com/llvm/llvm-project/actions/runs/16473314938

Please manually backport the fix and push it to your github fork.  Once this is done, please create a [pull request](https://github.com/llvm/llvm-project/compare)

https://github.com/llvm/llvm-project/pull/149857