[Security] Bump rails from 5.1.0 to 5.1.7

Bumps [rails](https://github.com/rails/rails) from 5.1.0 to 5.1.7. **This update includes security fixes.**
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](rails/rails@v5.1.0...v5.1.7)

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

Gemfile

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 ruby '2.4.1'
-gem 'rails', '5.1.6.1'
+gem 'rails', '5.1.6.2'
 
 # UI
 gem 'devise'

Gemfile.lock

@@ -13,25 +13,25 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.1.6.1)
-      actionpack (= 5.1.6.1)
+    actioncable (5.1.6.2)
+      actionpack (= 5.1.6.2)
       nio4r (~> 2.0)
       websocket-driver (~> 0.6.1)
-    actionmailer (5.1.6.1)
-      actionpack (= 5.1.6.1)
-      actionview (= 5.1.6.1)
-      activejob (= 5.1.6.1)
+    actionmailer (5.1.6.2)
+      actionpack (= 5.1.6.2)
+      actionview (= 5.1.6.2)
+      activejob (= 5.1.6.2)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.1.6.1)
-      actionview (= 5.1.6.1)
-      activesupport (= 5.1.6.1)
+    actionpack (5.1.6.2)
+      actionview (= 5.1.6.2)
+      activesupport (= 5.1.6.2)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.1.6.1)
-      activesupport (= 5.1.6.1)
+    actionview (5.1.6.2)
+      activesupport (= 5.1.6.2)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
@@ -44,20 +44,20 @@ GEM
     active_record-acts_as (4.0.1)
       activerecord (>= 4.2)
       activesupport (>= 4.2)
-    activejob (5.1.6.1)
-      activesupport (= 5.1.6.1)
+    activejob (5.1.6.2)
+      activesupport (= 5.1.6.2)
       globalid (>= 0.3.6)
-    activemodel (5.1.6.1)
-      activesupport (= 5.1.6.1)
+    activemodel (5.1.6.2)
+      activesupport (= 5.1.6.2)
     activemodel-serializers-xml (1.0.2)
       activemodel (> 5.x)
       activesupport (> 5.x)
       builder (~> 3.1)
-    activerecord (5.1.6.1)
-      activemodel (= 5.1.6.1)
-      activesupport (= 5.1.6.1)
+    activerecord (5.1.6.2)
+      activemodel (= 5.1.6.2)
+      activesupport (= 5.1.6.2)
       arel (~> 8.0)
-    activesupport (5.1.6.1)
+    activesupport (5.1.6.2)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -275,17 +275,17 @@ GEM
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rails (5.1.6.1)
-      actioncable (= 5.1.6.1)
-      actionmailer (= 5.1.6.1)
-      actionpack (= 5.1.6.1)
-      actionview (= 5.1.6.1)
-      activejob (= 5.1.6.1)
-      activemodel (= 5.1.6.1)
-      activerecord (= 5.1.6.1)
-      activesupport (= 5.1.6.1)
+    rails (5.1.6.2)
+      actioncable (= 5.1.6.2)
+      actionmailer (= 5.1.6.2)
+      actionpack (= 5.1.6.2)
+      actionview (= 5.1.6.2)
+      activejob (= 5.1.6.2)
+      activemodel (= 5.1.6.2)
+      activerecord (= 5.1.6.2)
+      activesupport (= 5.1.6.2)
       bundler (>= 1.3.0)
-      railties (= 5.1.6.1)
+      railties (= 5.1.6.2)
       sprockets-rails (>= 2.0.0)
     rails-controller-testing (1.0.2)
       actionpack (~> 5.x, >= 5.0.1)
@@ -301,9 +301,9 @@ GEM
       rails_stdout_logging
     rails_serve_static_assets (0.0.5)
     rails_stdout_logging (0.0.5)
-    railties (5.1.6.1)
-      actionpack (= 5.1.6.1)
-      activesupport (= 5.1.6.1)
+    railties (5.1.6.2)
+      actionpack (= 5.1.6.2)
+      activesupport (= 5.1.6.2)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
@@ -476,7 +476,7 @@ DEPENDENCIES
   phony_rails
   pry
   puma
-  rails (= 5.1.6.1)
+  rails (= 5.1.6.2)
   rails-controller-testing
   rails_12factor
   rails_service_check!