Bump rubocop-rails from 2.4.2 to 2.5.0

Bumps [rubocop-rails](https://github.com/rubocop-hq/rubocop-rails) from 2.4.2 to 2.5.0.
- [Release notes](https://github.com/rubocop-hq/rubocop-rails/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop-rails/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-rails@v2.4.2...v2.5.0)

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

Gemfile.lock

@@ -242,7 +242,7 @@ GEM
     parallel (1.19.1)
     parallel_tests (2.32.0)
       parallel
-    parser (2.7.0.3)
+    parser (2.7.0.5)
       ast (~> 2.4.0)
     pg (1.2.3)
     phantomjs (2.1.1.0)
@@ -333,7 +333,8 @@ GEM
       unicode-display_width (>= 1.4.0, < 1.7)
     rubocop-performance (1.5.2)
       rubocop (>= 0.71.0)
-    rubocop-rails (2.4.2)
+    rubocop-rails (2.5.0)
+      activesupport
       rack (>= 1.1)
       rubocop (>= 0.72.0)
     rubocop-rspec (1.38.1)