Update rspec gem and its settings

Author: yasulab

Gemfile

@@ -94,7 +94,7 @@ group :development, :test do
 
   gem 'capybara'
   gem 'factory_bot_rails'
-  gem 'rspec-rails', '~> 5.0'
+  gem 'rspec-rails', '~> 5.1.2'
   gem 'selenium-webdriver'
 
   gem 'dotenv-rails'

Gemfile.lock

@@ -600,7 +600,7 @@ DEPENDENCIES
   rake
   rambulance!
   rinku
-  rspec-rails (~> 5.0)
+  rspec-rails (~> 5.1.2)
   rspec-retry
   rss
   ruby-mp3info

config/application.rb

@@ -44,5 +44,8 @@ class Application < Rails::Application
 
     # HTML5サニタイザーの使用
     config.action_view.sanitizer_vendor = Rails::HTML::Sanitizer.best_supported_vendor
+
+    # Fixture paths
+    config.fixture_paths = [Rails.root.join('spec/fixtures')]
   end
 end