Changelog (https://github.com/symfony/routing/compare/v6.3.6...v6.4.0-BETA1)

• feature symfony/symfony#52079 [HttpKernel] Add parameters kernel.runtime_mode and kernel.runtime_mode.*, all set from env var APP_RUNTIME_MODE (@nicolas-grekas)
• feature symfony/symfony#52032 [FrameworkBundle][Routing][Translation][Workflow] Move some compiler passes from FrameworkBundle to components (@fancyweb)
• feature symfony/symfony#51483 [FrameworkBundle][Routing] Deprecate annotations (@alexandre-daubois)
• feature symfony/symfony#51425 [FrameworkBundle][Validator] Deprecate annotation occurrences (@alexandre-daubois)
• feature symfony/symfony#49358 [Routing] Deprecate annotations in favor of attributes (@derrabus)
• feature symfony/symfony#50842 Add missing return types to magic methods (@wouterj)
• feature symfony/symfony#50084 [Routing] Add FQCN and FQCN::method aliases when applicable (@fancyweb)