fix: update Gemfile to require Ruby >= 3.2 for modern gems

- Update ruby requirement from >= 2.6.10 to >= 3.2
- Add CFPropertyList >= 3.1.0 for Ruby 3.3 compatibility
- Remove old Gemfile.lock (will be regenerated by CI with Ruby 3.3)

This allows CFPropertyList 4.0.0 which supports Ruby 3.2+, resolving
the version conflict where:
- CFPropertyList 3.0.9 requires Ruby < 3.2
- CFPropertyList 4.0.0 requires Ruby >= 3.2

CI will generate the correct Gemfile.lock with compatible versions.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: Teodor Ciuraru

react-native/Gemfile

@@ -1,13 +1,14 @@
 source 'https://rubygems.org'
 
 # You may use http://rbenv.org/ or https://rvm.io/ to install and use this version
-ruby ">= 2.6.10"
+ruby ">= 3.2"
 
 # Exclude problematic versions of cocoapods and activesupport that causes build failures.
 gem 'cocoapods', '>= 1.13', '!= 1.15.0', '!= 1.15.1'
 gem 'activesupport', '>= 6.1.7.5', '!= 7.1.0'
 gem 'xcodeproj', '< 1.26.0'
 gem 'concurrent-ruby', '< 1.3.4'
+gem 'CFPropertyList', '>= 3.1.0'  # Ruby 3.3+ compatibility
 
 # Ruby 3.4.0 has removed some libraries from the standard library.
 gem 'bigdecimal'