build(deps): update which requirement from 4.4.0 to 5.0.0

Updates the requirements on [which](https://github.com/harryfei/which-rs) to permit the latest version.
- [Changelog](https://github.com/harryfei/which-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/harryfei/which-rs/compare/4.4.0...4.4.2)

---
updated-dependencies:
- dependency-name: which
  dependency-type: direct:production
...

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

Cargo.toml

@@ -95,7 +95,7 @@ test-log = { version = "0.2.13", default-features = false }
 testing_logger = { version = "0.1.1", default-features = false }
 thiserror = { version = "1", default-features = false }
 tokio = { version = "1.24.0", default-features = false }
-which = { version = "4.4.0", default-features = false }
+which = { version = "5.0.0", default-features = false }
 xtask = { path = "xtask", default-features = false }
 
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