Bump crossbeam-channel from 0.5.11 to 0.5.15

Bumps [crossbeam-channel](https://github.com/crossbeam-rs/crossbeam) from 0.5.11 to 0.5.15.
- [Release notes](https://github.com/crossbeam-rs/crossbeam/releases)
- [Changelog](https://github.com/crossbeam-rs/crossbeam/blob/master/CHANGELOG.md)
- [Commits](crossbeam-rs/crossbeam@crossbeam-channel-0.5.11...crossbeam-channel-0.5.15)

---
updated-dependencies:
- dependency-name: crossbeam-channel
  dependency-version: 0.5.15
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -38,7 +38,7 @@ anyhow = "1.0.75"
 cfg-if = "1.0.0"
 clap = { version = "3.1.6", features = ["derive"] }
 console = "0.15.7"
-crossbeam-channel = "0.5.8"
+crossbeam-channel = "0.5.15"
 ec4rs = { version = "1.0.2", optional = true }
 env_logger = { version = "0.10.0", default-features = false }
 full_moon = "1.2.0"