Update Rust crate tokio to v1.52.3

[dashql-renovate]

This PR contains the following updates:

Package	Type	Update	Change
tokio (source)	dependencies	patch	^1.52.1 → ^1.52.3
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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[dashql-renovate]

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[dashql-renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path packages/hyper-http-proxy/Cargo.toml --workspace
error: failed to parse manifest at `/tmp/renovate/repos/github/ankoh/dashql/packages/hyper-http-proxy/Cargo.toml`

Caused by:
  no targets specified in the manifest
  either src/lib.rs, src/main.rs, a [lib] section, or [[bin]] section must be present