Bump async-channel from 2.3.1 to 2.4.0

Bumps [async-channel](https://github.com/smol-rs/async-channel) from 2.3.1 to 2.4.0.
- [Release notes](https://github.com/smol-rs/async-channel/releases)
- [Changelog](https://github.com/smol-rs/async-channel/blob/master/CHANGELOG.md)
- [Commits](smol-rs/async-channel@v2.3.1...v2.4.0)

---
updated-dependencies:
- dependency-name: async-channel
  dependency-version: 2.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.lock

@@ -19,7 +19,7 @@ license = "MIT OR Apache-2.0"
 repository = "https://github.com/paritytech/polkadot-introspector"
 
 [workspace.dependencies]
-async-channel = "2.3.1"
+async-channel = "2.4.0"
 async-trait = "0.1.88"
 bincode = "1.3.3"
 clap = { version = "4.5.40", features = ["derive"] }