Update Rust crate mdbook to v0.4.47 (#26611)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [mdbook](https://redirect.github.com/rust-lang/mdBook) | dependencies
| patch | `0.4.45` -> `0.4.47` |

---

### Release Notes

<details>
<summary>rust-lang/mdBook (mdbook)</summary>

###
[`v0.4.47`](https://redirect.github.com/rust-lang/mdBook/blob/HEAD/CHANGELOG.md#mdBook-0447)

[Compare
Source](https://redirect.github.com/rust-lang/mdBook/compare/v0.4.46...v0.4.47)


[v0.4.46...v0.4.47](https://redirect.github.com/rust-lang/mdBook/compare/v0.4.46...v0.4.47)

##### Fixed

-   Fixed search not showing up in sub-directories.
[#&#8203;2586](https://redirect.github.com/rust-lang/mdBook/pull/2586)

###
[`v0.4.46`](https://redirect.github.com/rust-lang/mdBook/blob/HEAD/CHANGELOG.md#mdBook-0446)

[Compare
Source](https://redirect.github.com/rust-lang/mdBook/compare/v0.4.45...v0.4.46)


[v0.4.45...v0.4.46](https://redirect.github.com/rust-lang/mdBook/compare/v0.4.45...v0.4.46)

##### Changed

- The `output.html.hash-files` config option has been added to add
hashes to static filenames to bust any caches when a book is updated.
`{{resource}}` template tags have been added so that links can be
properly generated to those files.
[#&#8203;1368](https://redirect.github.com/rust-lang/mdBook/pull/1368)

##### Fixed

-   Playground links for Rust 2024 now set the edition correctly.
[#&#8203;2557](https://redirect.github.com/rust-lang/mdBook/pull/2557)

</details>

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Release Notes:

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