fix(deps): update rust crate hyper-util to v0.1.8

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
hyper-util (source)	dependencies	patch	0.1.7 -> 0.1.8

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Release Notes

hyperium/hyper-util (hyper-util)

### [`v0.1.8`](https://redirect.github.com/hyperium/hyper-util/blob/HEAD/CHANGELOG.md#018-2024-09-09) [Compare Source](https://redirect.github.com/hyperium/hyper-util/compare/v0.1.7...v0.1.8) - Add `server::conn::auto::upgrade::downcast()` for use with auto connection upgrades.

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