Update books

## rust-lang/book

1 commits in 39aeceaa3aeab845bc4517e7a44e48727d3b9dbe..05d114287b7d6f6c9253d5242540f00fbd6172ab
2026-02-03 15:19:04 UTC to 2026-02-03 15:19:04 UTC

- Temporarily remove the link to `Drop::drop` (rust-lang/book#4576)

## rust-lang/nomicon

1 commits in 050c002a360fa45b701ea34feed7a860dc8a41bf..b8f254a991b8b7e8f704527f0d4f343a4697dfa9
2026-01-29 12:15:01 UTC to 2026-01-29 12:15:01 UTC

- Fix deprecation warning for compare_and_swap in atomics.md (rust-lang/nomicon#519)

## rust-lang/reference

12 commits in 990819b86c22bbf538c0526f0287670f3dc1a67a..addd0602c819b6526b9cc97653b0fadca395528c
2026-02-04 14:35:59 UTC to 2026-01-26 18:02:14 UTC

- const-eval.const-expr.field: make paragraph more clear (rust-lang/reference#2157)
- make more clear what the link target is (rust-lang/reference#2156)
- Update two URLs (rust-lang/reference#2154)
- Add a chapter on divergence (rust-lang/reference#2067)
- Guarantee `repr(C)` union field offset (rust-lang/reference#2128)
- Reference updates for forbidding object lifetime changing pointer casts (rust-lang/reference#1951)
- Clarify only arrays undergo unsized coercion during dispatch (rust-lang/reference#2139)
- Split the textual chapter into separate char and str chapters (rust-lang/reference#2145)
- Document ppc inline asm support (rust-lang/reference#2056)
- Unwrap items, expressions, patterns, and types (rust-lang/reference#2141)
- undefined behavior: add missing plural in `undefined.misaligned.ptr` (rust-lang/reference#2146)
- inline-assembly: add a space to the `asm.abi-clobbers.many` example (rust-lang/reference#2144)