Fix system specs (#206)

Gemfile

@@ -39,8 +39,8 @@ gem 'kaminari', '1.2.2'
 group :development, :test do
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
 
-  gem 'rspec-rails', '~> 3.8.2'
-  gem 'factory_bot_rails', '~> 5.0.2'
+  gem 'rspec-rails', '3.8.3'
+  gem 'factory_bot_rails', '5.0.2'
 end
 
 group :development do
@@ -51,10 +51,10 @@ end
 
 group :test do
   # Adds support for Capybara system testing and selenium driver
-  gem 'capybara', '>= 2.15'
-  gem 'selenium-webdriver'
+  gem 'capybara', '3.36.0'
+  gem 'selenium-webdriver', '4.1.0'
   # Easy installation and use of web drivers to run system tests with browsers
-  gem 'webdrivers'
+  gem 'webdrivers', '5.0.0'
 end
 
 # If not bundled, webpack compilation in production fails