Update rstest requirement from 0.21.0 to 0.22.0

Updates the requirements on [rstest](https://github.com/la10736/rstest) to permit the latest version.
- [Release notes](https://github.com/la10736/rstest/releases)
- [Changelog](https://github.com/la10736/rstest/blob/master/CHANGELOG.md)
- [Commits](la10736/rstest@v0.21.0...v0.21.0)

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

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

Cargo.toml

@@ -47,7 +47,7 @@ proc-macro2 = "1.0.78"
 prost = "0.13.0"
 quote = "1.0.18"
 rand = "0.8.5"
-rstest = "0.21.0"
+rstest = "0.22.0"
 serde = "1.0.188"
 serde_json = "1.0.107"
 syn = "2.0.3"