3.21.0

Included commits: 3.20.0...3.21.0

Breaking Changes

• Raised the symfony/* dependency constraints from ^5.x || ^6.4.0 to ^6.4.0 || ^7.4.0, dropping Symfony 5 support across symfony/config, console, error-handler, event-dispatcher, filesystem, finder, form, http-client, http-foundation, http-kernel, intl, lock, messenger, mime, options-resolver, process, property-access, routing, security-core, security-csrf, security-http, serializer, stopwatch, translation, twig-bridge, validator, and yaml - projects still on Symfony 5 must upgrade to 6.4 or 7.4 before adopting this release.