Bump rspec-rails from 3.7.2 to 3.8.1

Bumps [rspec-rails](https://github.com/rspec/rspec-rails) from 3.7.2 to 3.8.1.
- [Release notes](https://github.com/rspec/rspec-rails/releases)
- [Changelog](https://github.com/rspec/rspec-rails/blob/master/Changelog.md)
- [Commits](https://github.com/rspec/rspec-rails/compare/v3.7.2...v3.8.1)

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

Gemfile

@@ -79,7 +79,7 @@ group :test do
   gem 'coveralls', '~> 0.8.22', require: false
   gem 'database_cleaner', '~> 1.6.1'
   gem 'email_spec', '~> 2.1.0'
-  gem 'rspec-rails', '~> 3.6'
+  gem 'rspec-rails', '~> 3.8'
   gem 'selenium-webdriver', '~> 3.10'
 end
 

Gemfile.lock

@@ -113,7 +113,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.1)
     coveralls (0.8.22)
       json (>= 1.8, < 3)
       simplecov (~> 0.16.1)
@@ -320,7 +320,7 @@ GEM
     public_suffix (3.0.3)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.10)
+    rack (1.6.11)
     rack-accept (0.4.5)
       rack (>= 0.4)
     rack-attack (5.0.1)
@@ -365,23 +365,23 @@ GEM
     rinku (2.0.4)
     rollbar (2.18.0)
       multi_json
-    rspec-core (3.7.1)
-      rspec-support (~> 3.7.0)
-    rspec-expectations (3.7.0)
+    rspec-core (3.8.0)
+      rspec-support (~> 3.8.0)
+    rspec-expectations (3.8.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.7.0)
-    rspec-mocks (3.7.0)
+      rspec-support (~> 3.8.0)
+    rspec-mocks (3.8.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.7.0)
-    rspec-rails (3.7.2)
+      rspec-support (~> 3.8.0)
+    rspec-rails (3.8.1)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       railties (>= 3.0)
-      rspec-core (~> 3.7.0)
-      rspec-expectations (~> 3.7.0)
-      rspec-mocks (~> 3.7.0)
-      rspec-support (~> 3.7.0)
-    rspec-support (3.7.0)
+      rspec-core (~> 3.8.0)
+      rspec-expectations (~> 3.8.0)
+      rspec-mocks (~> 3.8.0)
+      rspec-support (~> 3.8.0)
+    rspec-support (3.8.0)
     rubocop (0.54.0)
       parallel (~> 1.10)
       parser (>= 2.5)
@@ -555,7 +555,7 @@ DEPENDENCIES
   responders (~> 2.4.0)
   rinku (~> 2.0.2)
   rollbar (~> 2.18.0)
-  rspec-rails (~> 3.6)
+  rspec-rails (~> 3.8)
   rubocop (~> 0.54.0)
   rubocop-rspec (~> 1.26.0)
   rvm1-capistrano3 (~> 1.4.0)