Bump rubocop from 1.13.0 to 1.14.0

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.13.0 to 1.14.0.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.13.0...v1.14.0)

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

Gemfile

@@ -51,7 +51,7 @@ gem 'rdiscount', '~> 2.2'
 gem 'react-rails'
 gem "recaptcha", require: "recaptcha/rails"
 gem 'responders', '~> 3.0'
-gem 'rubocop', '~> 1.13.0', require: false
+gem 'rubocop', '~> 1.14.0', require: false
 gem "ruby-openid", :require => "openid"
 gem 'sanitize'
 gem 'sentry-raven'

Gemfile.lock

@@ -350,7 +350,7 @@ GEM
       mimemagic (~> 0.3.0)
       terrapin (~> 0.6.0)
     parallel (1.20.1)
-    parser (3.0.1.0)
+    parser (3.0.1.1)
       ast (~> 2.4.1)
     passenger (6.0.8)
       rack
@@ -463,17 +463,17 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.0)
-    rubocop (1.13.0)
+    rubocop (1.14.0)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml
-      rubocop-ast (>= 1.2.0, < 2.0)
+      rubocop-ast (>= 1.5.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.4.1)
-      parser (>= 2.7.1.5)
+    rubocop-ast (1.5.0)
+      parser (>= 3.0.1.1)
     ruby-openid (2.9.2)
     ruby-progressbar (1.11.0)
     ruby2_keywords (0.0.4)
@@ -672,7 +672,7 @@ DEPENDENCIES
   rest-client
   reverse_markdown
   rspec
-  rubocop (~> 1.13.0)
+  rubocop (~> 1.14.0)
   ruby-openid
   sanitize
   sassc (~> 2.4.0)