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Rollup merge of #157559 - InvalidPathException:main, r=jieyouxu
chore: Update annotate-snippets to 0.12.16
This PR updates `annotate-snippets` to [`0.12.16`](https://github.com/rust-lang/annotate-snippets-rs/blob/main/CHANGELOG.md#01216---2026-05-06) which fixes highlighting for indented code: https://github.com/rust-lang/annotate-snippets-rs/issues/405
Also fixes https://github.com/rust-lang/rust/issues/155873 (the same problem)