bump rspec-rails

Gemfile

@@ -206,7 +206,7 @@ group :test do
   gem 'rack_session_access'
   gem 'rspec', '~> 3.10.0'
   # also add to development group, so "spec" rake task gets loaded
-  gem 'rspec-rails', '~> 5.0.0', group: :development
+  gem 'rspec-rails', '~> 5.1.0', group: :development
 
   # Retry failures within the same environment
   gem 'retriable', '~> 3.1.1'

Gemfile.lock

@@ -811,7 +811,7 @@ GEM
     rspec-mocks (3.10.2)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
-    rspec-rails (5.0.3)
+    rspec-rails (5.1.0)
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       railties (>= 5.2)
@@ -1099,7 +1099,7 @@ DEPENDENCIES
   roar (~> 1.1.0)
   rouge (~> 3.27.0)
   rspec (~> 3.10.0)
-  rspec-rails (~> 5.0.0)
+  rspec-rails (~> 5.1.0)
   rspec-retry (~> 0.6.1)
   rubocop
   rubocop-rails