Update to mdbook 0.5 This updates to mdbook 0.5.2 from mdbook 0.4.52. A primary aspect of this change is that it splits the `mdbook` crate into multiple crates, and various API changes and cleanup. There's full release notes and a migration guide at https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-050. This also includes submodule updates: ## book 2 commits in 8c0eacd5c4acbb650497454f3a58c9e8083202a4..39aeceaa3aeab845bc4517e7a44e48727d3b9dbe 2025-11-18 10:36:41 -0500 to 2025-12-12 11:02:27 -0500 - Synchronize TrplNote name - Update to mdbook 0.5 ## edition-guide 1 commits in 9cf5443d632673c4d41edad5e8ed8be86eeb3b8f..c3c0f0b3da26610138b7ba7663f60cd2c68cf184 2025-11-15 21:51:11 +0000 to 2025-11-28 18:54:18 +0000 - Update to mdbook 0.5 (rust-lang/edition-guide#381) ## nomicon 2 commits in 0fe83ab28985b99aba36a1f0dbde3e08286fefda..9fe8fa599ad228dda74f240cc32b54bc5c1aa3e6 2025-11-15 00:03:14 +0000 to 2025-12-03 11:54:04 +0000 - Remove references to outdated unsafe code guidelines (rust-lang/nomicon#512) - Update to mdbook 0.5 (rust-lang/nomicon#511) ## reference 5 commits in b14b4e40f53ca468beaf2f5d0dfb4f4c4ba6bc7b..50c5de90487b68d429a30cc9466dc8f5b410128f 2025-12-02 21:17:44 +0000 to 2025-12-09 22:19:05 +0000 - UB: update the extra clause for provenance UB during const evaluation (rust-lang/reference#2091) - Remove `[no-mentions]` handler in our triagebot config (rust-lang/reference#2102) - Clarify that omitting `nostack` is a promise from the compiler to the programmer (rust-lang/reference#1999) - Specify that range patterns must be nonempty. (rust-lang/reference#2093) - Update to mdbook 0.5 (rust-lang/reference#2096) ## rust-by-example 1 commits in 111cfae2f9c3a43f7b0ff8fa68c51cc8f930637c..7d21279e40e8f0e91c2a22c5148dd2d745aef8b6 2025-11-27 17:16:42 -0300 to 2025-12-01 15:02:09 -0300 - Update to mdbook 0.5 (rust-lang/rust-by-example#1977)
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