Update criterion requirement from 0.4 to 0.5 (#15)

Updates the requirements on [criterion](https://github.com/bheisler/criterion.rs) to permit the latest version.
- [Changelog](https://github.com/bheisler/criterion.rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/bheisler/criterion.rs/compare/0.4.0...0.5.1)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -38,7 +38,7 @@ type-layout = { version = "0.2", optional = true }
 
 [dev-dependencies]
 rand = "0.8"
-criterion = { version = "0.4", features = ["html_reports"] }
+criterion = { version = "0.5", features = ["html_reports"] }
 
 [[bench]]
 name = "roundtrip"