Update Rust crate hyper-util to v0.1.21

[oxide-renovate]

This PR contains the following updates:

Package	Type	Update	Change
hyper-util (source)	workspace.dependencies	patch	0.1.20 → 0.1.21

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Release Notes

hyperium/hyper-util (hyper-util)

v0.1.21

Compare Source

This release bumps the minimal supported Rust version (MSRV) from 1.64 to 1.85.

This release bumps the rust edition from 2021 to 2024.

Additions

• Add crate-level documentation. (#​327)
• Add client::legacy::Builder::http2_header_table_size() method. (#​274)
• Add client::legacy::Builder::http2_max_concurrent_streams() method. (#​274)
• Add client::legacy::Builder::http2_max_local_error_reset_streams() method. (#​277)
• Add client::legacy::connect::HttpConnector::set_mark() method. (#​303)
• Add rt::tracing::WithSpanExecutor<E>, hyper_util::rt::tracing::CurrentSpanExecutor<E>, and hyper_util::rt::tracing::MkSpanExecutor<E, F> executors. (#​323)

Fixes

• Fix client::legacy::Client so that it properly validates CONNECT responses. (#​315)
• Fix client::legacy::Client to cancel the idle interval once its pool empties. (#​292)
• Fix client::legacy::Client to properly handle IPv6 addresses when using a SOCKS proxy. (#​302)
• Fix client::pool::cache to preserve readiness with clones. (#​297)
• Fix client::pool::cache to wake its waiters in FIFO order. (#​298)
• Fix client::pool::singleton::Singleton to properly handle cancellation. (#​299)
• Fix client::pool::singleton::Singleton to share errors with all waiters. (#​296)
• Fix client::proxy::matcher handling for IP wildcards. (#​309)
• The tokio/net feature is narrowed to the client-legacy feature flag, from the client feature flag. (#​276)
• Various fixes to the client::legacy::Client's SOCKS proxying. (#​302) (#​307) (#​308) (#​310)

Changes

This release contains a minor behavioral change for users of the tracing
feature flag to be aware of.

This feature flag was introduced in v0.1.11. When enabled,
rt::TokioExecutor<E> began propagating the currently active tracing::Span
to spawned tasks when hyper::rt::Executor::execute() is called. This caused
issues for some users, due to background tasks keeping a span open for the
duration of a long-lived connection.

This behavior has now been removed from rt::TokioExecutor<E>
(#​322) by default. A
collection of executor wrappers have been added to a new rt::tracing
submodule, to provide facilities for instrumenting a client or server's spawned
tasks. See the module-level documentation of rt::tracing for more
information.

To temporarily preserve the previous rt::TokioExecutor<E> span propagation
behavior, enable the rt-tracing-exec-force feature. Note that this feature
flag will be removed in a future release.

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