Bump rubocop from 0.68.0 to 0.68.1 (mastodon#10658)

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.68.0 to 0.68.1.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v0.68.0...v0.68.1)

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

Gemfile.lock

@@ -527,7 +527,7 @@ GEM
       rspec-core (~> 3.0, >= 3.0.0)
       sidekiq (>= 2.4.0)
     rspec-support (3.8.0)
-    rubocop (0.68.0)
+    rubocop (0.68.1)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
       parser (>= 2.5, != 2.5.1.1)