build(deps-dev): bump rubocop from 1.67.0 to 1.68.0

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.67.0 to 1.68.0.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.67.0...v1.68.0)

---
updated-dependencies:
- dependency-name: rubocop
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -33,7 +33,7 @@ GEM
     rake (13.2.1)
     regexp_parser (2.9.2)
     rexml (3.3.8)
-    rubocop (1.67.0)
+    rubocop (1.68.0)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)