fix: Gemfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-RUBY-REXML-7462086

Gemfile

@@ -60,7 +60,7 @@ end
 
 group :test do
   gem 'capybara'
-  gem 'selenium-webdriver', '<= 4.9.0', require: false
+  gem 'selenium-webdriver', '~> 4.9', '>= 4.9.1', require: false
   gem 'database_cleaner', '>= 2.0.2'
   gem 'rake'
 end