Update criterion requirement from 0.5 to 0.6 (#202)

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@0.5.0...0.6.0)

---
updated-dependencies:
- dependency-name: criterion
  dependency-version: 0.6.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -46,7 +46,7 @@ rand_chacha = "0.3"
 sha2 = "0.10"
 
 [dev-dependencies]
-criterion = "0.5"
+criterion = "0.6"
 proptest = "1"
 serde_json = "1"