chore(deps): bump rstest from 0.19.0 to 0.21.0 (#85)

Bumps [rstest](https://github.com/la10736/rstest) from 0.19.0 to 0.21.0.
- [Release notes](https://github.com/la10736/rstest/releases)
- [Changelog](https://github.com/la10736/rstest/blob/master/CHANGELOG.md)
- [Commits](la10736/rstest@v0.19.0...v0.21.0)

---
updated-dependencies:
- dependency-name: rstest
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -12,5 +12,5 @@ rand     ="0.8.5"
 itertools="0.13.0"
 
 [dev-dependencies]
-rstest           ="0.19.0"
+rstest           ="0.21.0"
 pretty_assertions="1.4.0"