Bump rails from 5.2.0 to 5.2.1

Bumps [rails](https://github.com/rails/rails) from 5.2.0 to 5.2.1.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](rails/rails@v5.2.0...v5.2.1)

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

Gemfile

@@ -2,7 +2,7 @@ ruby '2.5.1'
 
 source 'https://rubygems.org'
 
-gem 'rails', '5.2.1.rc1'
+gem 'rails', '5.2.1'
 
 gem 'active_decorator'
 gem 'array_form_helper'

Gemfile.lock

@@ -1,44 +1,44 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.2.1.rc1)
-      actionpack (= 5.2.1.rc1)
+    actioncable (5.2.1)
+      actionpack (= 5.2.1)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
-    actionmailer (5.2.1.rc1)
-      actionpack (= 5.2.1.rc1)
-      actionview (= 5.2.1.rc1)
-      activejob (= 5.2.1.rc1)
+    actionmailer (5.2.1)
+      actionpack (= 5.2.1)
+      actionview (= 5.2.1)
+      activejob (= 5.2.1)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.2.1.rc1)
-      actionview (= 5.2.1.rc1)
-      activesupport (= 5.2.1.rc1)
+    actionpack (5.2.1)
+      actionview (= 5.2.1)
+      activesupport (= 5.2.1)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.2.1.rc1)
-      activesupport (= 5.2.1.rc1)
+    actionview (5.2.1)
+      activesupport (= 5.2.1)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
     active_decorator (1.0.0)
-    activejob (5.2.1.rc1)
-      activesupport (= 5.2.1.rc1)
+    activejob (5.2.1)
+      activesupport (= 5.2.1)
       globalid (>= 0.3.6)
-    activemodel (5.2.1.rc1)
-      activesupport (= 5.2.1.rc1)
-    activerecord (5.2.1.rc1)
-      activemodel (= 5.2.1.rc1)
-      activesupport (= 5.2.1.rc1)
+    activemodel (5.2.1)
+      activesupport (= 5.2.1)
+    activerecord (5.2.1)
+      activemodel (= 5.2.1)
+      activesupport (= 5.2.1)
       arel (>= 9.0)
-    activestorage (5.2.1.rc1)
-      actionpack (= 5.2.1.rc1)
-      activerecord (= 5.2.1.rc1)
+    activestorage (5.2.1)
+      actionpack (= 5.2.1)
+      activerecord (= 5.2.1)
       marcel (~> 0.3.1)
-    activesupport (5.2.1.rc1)
+    activesupport (5.2.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -137,7 +137,7 @@ GEM
     http-form_data (2.1.0)
     http_accept_language (2.1.1)
     http_parser.rb (0.6.0)
-    i18n (1.0.1)
+    i18n (1.1.0)
       concurrent-ruby (~> 1.0)
     icalendar (2.4.1)
     io-like (0.3.0)
@@ -176,7 +176,7 @@ GEM
     method_source (0.9.0)
     mime-types (2.99.3)
     mimemagic (0.3.2)
-    mini_mime (1.0.0)
+    mini_mime (1.0.1)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
     minitest-slow_test (0.2.0)
@@ -233,27 +233,27 @@ GEM
       rack (>= 1.2.0)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rails (5.2.1.rc1)
-      actioncable (= 5.2.1.rc1)
-      actionmailer (= 5.2.1.rc1)
-      actionpack (= 5.2.1.rc1)
-      actionview (= 5.2.1.rc1)
-      activejob (= 5.2.1.rc1)
-      activemodel (= 5.2.1.rc1)
-      activerecord (= 5.2.1.rc1)
-      activestorage (= 5.2.1.rc1)
-      activesupport (= 5.2.1.rc1)
+    rails (5.2.1)
+      actioncable (= 5.2.1)
+      actionmailer (= 5.2.1)
+      actionpack (= 5.2.1)
+      actionview (= 5.2.1)
+      activejob (= 5.2.1)
+      activemodel (= 5.2.1)
+      activerecord (= 5.2.1)
+      activestorage (= 5.2.1)
+      activesupport (= 5.2.1)
       bundler (>= 1.3.0)
-      railties (= 5.2.1.rc1)
+      railties (= 5.2.1)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.0.4)
       loofah (~> 2.2, >= 2.2.2)
-    railties (5.2.1.rc1)
-      actionpack (= 5.2.1.rc1)
-      activesupport (= 5.2.1.rc1)
+    railties (5.2.1)
+      actionpack (= 5.2.1)
+      activesupport (= 5.2.1)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.19.0, < 2.0)
@@ -416,7 +416,7 @@ DEPENDENCIES
   pghero
   puma
   rack-mini-profiler
-  rails (= 5.2.1.rc1)
+  rails (= 5.2.1)
   rambulance
   rinku
   rollbar