build(deps): update criterion requirement in /css-inline

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@0.5.1...0.6.0)

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

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

Author: dependabot[bot]

css-inline/Cargo.toml

@@ -44,7 +44,7 @@ url = "2"
 [dev-dependencies]
 assert_cmd = "2.0.6"
 codspeed-criterion-compat = "2.4.0"
-criterion = { version = "0.5.1", features = [], default-features = false }
+criterion = { version = "0.6.0", features = [], default-features = false }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 test-case = "3.3"