Update Rust crate mdbook to ^0.4.24

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
mdbook	dependencies	patch	^0.4.23 -> ^0.4.24

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Release Notes

rust-lang/mdBook

### [`v0.4.24`](https://togithub.com/rust-lang/mdBook/blob/HEAD/CHANGELOG.md#mdBook-0424) [Compare Source](https://togithub.com/rust-lang/mdBook/compare/v0.4.23...v0.4.24) [eb77083...8767ebf](https://togithub.com/rust-lang/mdBook/compare/eb77083...8767ebf) ##### Fixed - The precompiled linux-gnu mdbook binary available on [GitHub Releases](https://togithub.com/rust-lang/mdBook/releases) inadvertently switched to a newer version of glibc. This release goes back to an older version that should be more compatible on older versions of Linux. [#​1955](https://togithub.com/rust-lang/mdBook/pull/1955)

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