Bump rubocop from 1.9.1 to 1.10.0

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 1.9.1 to 1.10.0.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.9.1...v1.10.0)

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

Gemfile.lock

@@ -81,7 +81,7 @@ GEM
       power_assert (~> 1.1.0)
       rspec (>= 2.14)
     rspec-support (3.10.2)
-    rubocop (1.9.1)
+    rubocop (1.10.0)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)