Fix version in gemfile

qa/Gemfile

@@ -9,7 +9,7 @@ gem 'capybara', '~> 3.35.0'
 gem 'capybara-screenshot', '~> 1.0.23'
 gem 'rake', '~> 12.3.3'
 gem 'rspec', '~> 3.10'
-gem 'selenium-webdriver', '~> 4.0.0.rc1'
+gem 'selenium-webdriver', '~> 4.0'
 gem 'airborne', '~> 0.3.4', require: false # airborne is messing with rspec sandboxed mode so not requiring by default
 gem 'rest-client', '~> 2.1.0'
 gem 'rspec-retry', '~> 0.6.1', require: 'rspec/retry'