build(deps): Bump tokio from 1.21.2 to 1.23.1 in /examples/rust

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Bumps tokio from 1.21.2 to 1.23.1.

Release notes

Sourced from tokio's releases.

Tokio v1.23.1

This release forward ports changes from 1.18.4.

Fixed

• net: fix Windows named pipe server builder to maintain option when toggling pipe mode (#5336).

#5336: tokio-rs/tokio#5336

Tokio v1.23.0

Fixed

• net: fix Windows named pipe connect (#5208)
• io: support vectored writes for ChildStdin (#5216)
• io: fix async fn ready() false positive for OS-specific events (#5231)

Changed

• runtime: yield_now defers task until after driver poll (#5223)
• runtime: reduce amount of codegen needed per spawned task (#5213)
• windows: replace winapi dependency with windows-sys (#5204)

#5208: tokio-rs/tokio#5208 #5216: tokio-rs/tokio#5216 #5213: tokio-rs/tokio#5213 #5204: tokio-rs/tokio#5204 #5223: tokio-rs/tokio#5223 #5231: tokio-rs/tokio#5231

Tokio v1.22.0

Added

• runtime: add Handle::runtime_flavor (#5138)
• sync: add Mutex::blocking_lock_owned (#5130)
• sync: add Semaphore::MAX_PERMITS (#5144)
• sync: add merge() to semaphore permits (#4948)
• sync: add mpsc::WeakUnboundedSender (#5189)

Added (unstable)

• process: add Command::process_group (#5114)
• runtime: export metrics about the blocking thread pool (#5161)
• task: add task::id() and task::try_id() (#5171)

Fixed

• macros: don't take ownership of futures in macros (#5087)
• runtime: fix Stacked Borrows violation in LocalOwnedTasks (#5099)
• runtime: mitigate ABA with 32-bit queue indices when possible (#5042)
• task: wake local tasks to the local queue when woken by the same thread (#5095)
• time: panic in release mode when mark_pending called illegally (#5093)
• runtime: fix typo in expect message (#5169)

... (truncated)

Commits

• 1a997ff chore: prepare Tokio v1.23.1 release
• a8fe333 Merge branch 'tokio-1.20.x' into tokio-1.23.x
• ba81945 chore: prepare Tokio 1.20.3 release
• 763bdc9 ci: run WASI tasks using latest Rust
• 9f98535 Merge remote-tracking branch 'origin/tokio-1.18.x' into fix-named-pipes-1.20
• 9241c3e chore: prepare Tokio v1.18.4 release
• 699573d net: fix named pipes server configuration builder
• 3ce5a26 chore: prepare Tokio v1.23 release (#5270)
• 644cb82 rt: fix *_closed false positives (#5231)
• a1316cd io: impl std::io::BufRead on SyncIoBridge\<T> (#5265)
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