Bump rack from 3.2.0 to 3.2.2 in /benchmarks/rubocop (#414)

Bumps [rack](https://github.com/rack/rack) from 3.2.0 to 3.2.2.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v3.2.0...v3.2.2)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 3.2.2
  dependency-type: indirect
...

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

Author: dependabot[bot]

benchmarks/rubocop/Gemfile.lock

@@ -34,7 +34,7 @@ GEM
       racc
     prism (1.4.0)
     racc (1.8.1)
-    rack (3.2.0)
+    rack (3.2.2)
     rainbow (3.1.1)
     regexp_parser (2.10.0)
     rubocop (1.79.1)