[rb] Avoid overescaping browser path

Related to #13632

rb/lib/selenium/webdriver/common/selenium_manager.rb

@@ -63,7 +63,7 @@ def generate_command(binary, options)
           end
           if options.respond_to?(:binary) && !options.binary.nil?
             command << '--browser-path'
-            command << options.binary.gsub('\\', '\\\\\\')
+            command << options.binary.squeeze('\\').gsub('\\', '\\\\\\')
           end
           if options.proxy
             command << '--proxy'