symfony/dependency-injection v5.4.0-BETA1

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Changelog (v5.3.10...v5.4.0-BETA1)

• feature #42471 Add generic types to traversable implementations (derrabus)
• feature #43804 Deprecate Composer 1 (derrabus)
• feature #42238 Add SubscribedService attribute, deprecate current ServiceSubscriberTrait usage (kbond)
• feature #43386 Extend TaggedIterator and TaggedLocator Attributes with able to specify defaultIndexMethod for #[TaggerIterator] and #[TaggedLocator] (fractalzombie)
• feature #43479 autowire union and intersection types (nicolas-grekas)
• feature #43015 Allow injecting tagged iterator as service locator arguments (IonBazan)
• feature #42959 Make auto-aliases private by default (nicolas-grekas)
• feature #42532 Sort services in service locator according to priority (BoShurik)
• feature #42039 Autoconfigurable attributes on methods, properties and parameters (ruudk)
• feature #42625 Add service_closure() to the PHP-DSL (HypeMC)