Bump rubocop from 0.84.0 to 0.85.0

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.84.0 to 0.85.0.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v0.84.0...v0.85.0)

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

Author: dependabot-preview[bot]

Gemfile.lock

@@ -209,10 +209,11 @@ GEM
       actionpack (>= 5.0)
       railties (>= 5.0)
     rexml (3.2.4)
-    rubocop (0.84.0)
+    rubocop (0.85.0)
       parallel (~> 1.10)
       parser (>= 2.7.0.1)
       rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.7)
       rexml
       rubocop-ast (>= 0.0.3)
       ruby-progressbar (~> 1.7)