feat: Upgrade to Ruby 3.3.7+ and Rails 7.2+ support with SCSS fixes

[anilyanduri]

🚀 Overview

This PR upgrades the recurring_select gem to support modern Ruby and Rails versions while fixing SCSS compilation issues.

�� Breaking Changes

• Ruby: Drop support for Ruby < 3.3.7
• Rails: Drop support for Rails < 7.2
• SCSS: Replace sass-rails with sassc-rails for better compilation

✨ Key Changes

Version Updates

• Bump version to 4.0.0 (from 4.0.0.rc1)
• Add Ruby >= 3.3.7 requirement
• Update Rails dependency to >= 7.2
• Update .ruby-version to 3.3.7

Dependencies

• Replace sass-rails with sassc-rails for improved SCSS compilation
• Update development dependencies:
  • bundler >= 2.0
  • rspec-rails >= 7.0
  • rspec >= 3.0
  • rake >= 13.0

Rails Compatibility

• Update test configuration for Rails 7.2
• Rename spec/gemfiles/rails-7.0 to spec/gemfiles/rails-7.2
• Remove deprecated cache format version configuration
• Fix Rails 7.2 compatibility issues

Documentation

• Update CHANGELOG.md with comprehensive change list
• Document all breaking changes and enhancements

�� Testing

• ✅ All 8 tests pass successfully
• ✅ SCSS compilation works without errors
• ✅ Asset precompilation successful
• ✅ Compatible with Rails 7.2.2.2
• ✅ Compatible with Ruby 3.3.9

📋 Checklist

• Update Ruby version requirement to >= 3.3.7
• Update Rails version requirement to >= 7.2
• Replace sass-rails with sassc-rails
• Update all development dependencies
• Fix Rails 7.2 compatibility issues
• Update test configuration
• Update version to 4.0.0
• Update changelog
• Test asset compilation
• Run full test suite

🔗 Related Issues

• Fixes SCSS compilation issues with modern Rails versions
• Enables support for latest Ruby and Rails versions
• Maintains backward compatibility for existing functionality

📝 Migration Notes

For users upgrading from previous versions:

1. Ruby: Ensure you're using Ruby 3.3.7 or higher
2. Rails: Ensure you're using Rails 7.2 or higher
3. Dependencies: The gem will automatically use sassc-rails instead of sass-rails

No changes to existing API or functionality are required.

🎯 Benefits

• Modern Support: Compatible with latest Ruby and Rails versions
• Better SCSS: Improved SCSS compilation with sassc-rails
• Security: Updated dependencies with latest security patches
• Performance: Better asset compilation performance
• Maintainability: Cleaner dependency management

---

Version: 4.0.0
Ruby: >= 3.3.7
Rails: >= 7.2