fix: Gemfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-RUBY-ACTIVERECORD-2960802

Author: snyk-io[bot]

Gemfile

@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 gemspec
 
 gem 'devise', '~> 4.8'
-gem 'rails', '~> 7.0.0'
+gem 'rails', '~> 7.0.3', '>= 7.0.3.1'
 gem 'sqlite3'
 
 gem 'mocha', '~> 1.0', require: false