Changelog (https://github.com/symfony/options-resolver/compare/v7.3.4...v8.0.0-BETA1)

• feature symfony/symfony#60723 [OptionsResolver] Remove support for nested options definition via setDefault(), use setOptions() instead (@yceruto)
• feature symfony/symfony#60639 Bump Symfony 8 to PHP >= 8.4 (@nicolas-grekas)