Bump rubocop from 0.70.0 to 0.71.0

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.70.0 to 0.71.0.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v0.70.0...v0.71.0)

Author: dependabot-preview[bot]

Gemfile.lock

@@ -10,7 +10,7 @@ GEM
       ast (~> 2.4.0)
     rainbow (3.0.0)
     rake (12.3.2)
-    rubocop (0.70.0)
+    rubocop (0.71.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
       parser (>= 2.6)