Update criterion requirement from 0.7.0 to 0.8.0

Updates the requirements on [criterion](https://github.com/criterion-rs/criterion.rs) to permit the latest version.
- [Release notes](https://github.com/criterion-rs/criterion.rs/releases)
- [Changelog](https://github.com/criterion-rs/criterion.rs/blob/master/CHANGELOG.md)
- [Commits](criterion-rs/criterion.rs@criterion-plot-v0.7.0...criterion-v0.8.0)

---
updated-dependencies:
- dependency-name: criterion
  dependency-version: 0.8.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -41,7 +41,7 @@ default-features = false
 
 [dev-dependencies]
 rayon = "1.0.0"
-criterion = "0.7.0"
+criterion = "0.8.0"
 
 [[bench]]
 name = "parsing_benchmarks"