fix: Gemfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-RUBY-ACTIONMAILER-8220269
- https://snyk.io/vuln/SNYK-RUBY-ACTIONPACK-8220162
- https://snyk.io/vuln/SNYK-RUBY-ACTIONPACK-8220268
- https://snyk.io/vuln/SNYK-RUBY-ACTIONTEXT-8220270

Gemfile

@@ -6,7 +6,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 ruby '3.3.5'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '~> 7.1.4'
+gem 'rails', '~> 7.1.4', '>= 7.1.4.1'
 # Use Puma as the app server
 gem 'puma', '~> 6.4'