Replace webdrivers with Selenium Manager

The webdrivers gem has path handling bugs and is deprecated. Selenium
4.11+ includes Selenium Manager which handles driver downloads
automatically without external dependencies.

Author: tf

activeadmin-searchable_select.gemspec

@@ -26,8 +26,7 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency 'capybara', '~> 3.9'
   spec.add_development_dependency 'puma', '~> 5.0'
-  spec.add_development_dependency 'selenium-webdriver', '~> 4.1'
-  spec.add_development_dependency 'webdrivers', '= 5.3.0'
+  spec.add_development_dependency 'selenium-webdriver', '>= 4.11'
 
   spec.add_development_dependency 'coffee-rails'
   spec.add_development_dependency 'rails'

spec/support/capybara.rb

@@ -1,6 +1,5 @@
 require 'capybara/rspec'
 require 'selenium-webdriver'
-require 'webdrivers/chromedriver'
 
 Capybara.javascript_driver = :selenium_chrome_headless