Update Rust crate tokio to v1.52.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
tokio (source)	dependencies	patch	1.52.1 → 1.52.3

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Release Notes

tokio-rs/tokio (tokio)

v1.52.3: Tokio v1.52.3

Compare Source

1.52.3 (May 8th, 2026)

Fixed

• sync: fix underflow in mpsc channel len() (#​8062)
• sync: notify receivers in mpsc OwnedPermit::release() method (#​8075)
• sync: require that an RwLock has max_readers != 0 (#​8076)
• sync: return Empty from try_recv() when mpsc is closed with outstanding permits (#​8074)

v1.52.2: Tokio v1.52.2

Compare Source

1.52.2 (May 4th, 2026)

This release reverts the LIFO slot stealing change introduced in 1.51.0 (#​7431), due to its performance impact. (#​8100)

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