Changelog (https://github.com/symfony/symfony/compare/v7.4.0-RC3...v7.4.0)

• feature #62528 Thank you redirection.io and JoliCode for backing Symfony 7.4! (@nicolas-grekas)
• feature #62527 Thank you Private Packagist for backing Symfony 7.4! (@nicolas-grekas)
• feature #62526 Thank you SensioLabs for backing Symfony 7.4! (@nicolas-grekas)
• bug #62474 [Config] Fix nullable EnumNode with BackedEnum (@yoeunes)
• bug #62485 [DependencyInjection] Fix loop corruption in CheckTypeDeclarationsPass (@yoeunes)
• bug #62486 [DependencyInjection] Fix invalid PHP syntax for nullable TypedReference in PhpDumper (@yoeunes)
• bug #62487 [Security] Fix UserBadge validation bypass via identifier normalizer (@yoeunes)
• bug #62489 [FrameworkBundle] Fix TypeError when traversing scalar values in debug:config (@yoeunes)
• bug #62493 [Console] Fix exception message when abbreviation matches multiple hidden commands (@yoeunes)
• bug #62471 [String] Fix normalization in trimPrefix/trimSuffix (@yoeunes)
• bug #62476 [DependencyInjection] Fix wrong trait usage in ServiceLocatorArgument (@yoeunes)
• feature #62469 [Security] Keep SymfonyCasts as backers of the Security components v7.4 🤗 (@nicolas-grekas)

[PR] https://github.com/symfony/symfony/pull/62534