chore(deps): Bump tokio from 1.50.0 to 1.52.1 in /src/code-validator/guest

[dependabot]

Bumps tokio from 1.50.0 to 1.52.1.

Release notes

Sourced from tokio's releases.

Tokio v1.52.1

1.52.1 (April 16th, 2026)

Fixed

• runtime: revert #7757 to fix [a regression]#8056 that causes spawn_blocking to hang (#8057)

#7757: tokio-rs/tokio#7757 #8056: tokio-rs/tokio#8056 #8057: tokio-rs/tokio#8057

Tokio v1.52.0

1.52.0 (April 14th, 2026)

Added

• io: AioSource::register_borrowed for I/O safety support (#7992)
• net: add try_io function to unix::pipe sender and receiver types (#8030)

Added (unstable)

• runtime: Builder::enable_eager_driver_handoff setting enable eager hand off of the I/O and time drivers before polling tasks (#8010)
• taskdump: add trace_with() for customized task dumps (#8025)
• taskdump: allow impl FnMut() in trace_with instead of just fn() (#8040)
• fs: support io_uring in AsyncRead for File (#7907)

Changed

• runtime: improve spawn_blocking scalability with sharded queue (#7757)
• runtime: use compare_exchange_weak() in worker queue (#8028)

Fixed

• runtime: overflow second half of tasks when local queue is filled instead of first half (#8029)

Documented

• docs: fix typo in oneshot::Sender::send docs (#8026)
• docs: hide #[tokio::main] attribute in the docs of sync::watch (#8035)
• net: add docs on ConnectionRefused errors with UDP sockets (#7870)

#7757: tokio-rs/tokio#7757 #7870: tokio-rs/tokio#7870 #7907: tokio-rs/tokio#7907 #7992: tokio-rs/tokio#7992 #8010: tokio-rs/tokio#8010 #8025: tokio-rs/tokio#8025 #8026: tokio-rs/tokio#8026 #8028: tokio-rs/tokio#8028 #8029: tokio-rs/tokio#8029

... (truncated)

Commits

• 905c146 chore: prepare to release v1.52.1 (#8059)
• 56aaa43 rt: revert #7757 to fix regression in spawn_blocking (#8057)
• 57ff47a ci: update trybuild to expect output from rustc 1.95.0 (#8058)
• 812de3e ci: bump taiki-e/cache-cargo-install-action from 1 to 3 (#8053)
• ba82e73 ci: use Dependabot to keep github actions up to date (#8052)
• 2e85f9d ci: replace cirrus-ci with freebsd-vm (#8041)
• a7e1cd8 ci: update GitHub Actions workflows to use latest tool versions (#8047)
• 5f7be0a chore: perpare 1.52.0 (#8045)
• 36d12d2 taskdump: allow impl FnMut() in taskdumps instead of just fn() (#8040)
• f943312 fs: support io-uring in AsyncRead for File (#7907)
• Additional commits viewable in compare view