Update criterion requirement from 0.3.5 to 0.5.1

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](bheisler/criterion.rs@0.3.5...0.5.1)

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

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

Cargo.toml

@@ -26,7 +26,7 @@ futures = "0.3.21"
 futures-await-test = "0.3.0"
 futures-timer = "3.0.2"
 async-std = { version = "1.10.0", features = ["attributes"] }
-criterion = { version = "0.3.5", features = ["html_reports", "async_futures"] }
+criterion = { version = "0.5.1", features = ["html_reports", "async_futures"] }
 
 [[bench]]
 name = "my_benchmark"