[clang-tools-extra] [clang-tidy] New bugprone-unsafe-format-string check (PR #168691)

[via cfe-commits]

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+.. title:: clang-tidy - bugprone-unsafe-format-string
+
+bugprone-unsafe-format-string
+==============================
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EugeneZelenko wrote:

```suggestion
bugprone-unsafe-format-string
=============================
```

https://github.com/llvm/llvm-project/pull/168691