Update symfony/event-dispatcher requirement from ~4.4 to ~5.3 in /build/integration

[dependabot]

Updates the requirements on symfony/event-dispatcher to permit the latest version.

Release notes

Sourced from symfony/event-dispatcher's releases.

v5.3.0

Changelog (symfony/event-dispatcher@v5.3.0-RC1...v5.3.0)

• no significant changes

Changelog

Sourced from symfony/event-dispatcher's changelog.

CHANGELOG

5.3

• Add #[AsEventListener] attribute for declaring listeners on PHP 8

5.1.0

• The LegacyEventDispatcherProxy class has been deprecated.
• Added an optional dispatcher attribute to the listener and subscriber tags in RegisterListenerPass.

5.0.0

• The signature of the EventDispatcherInterface::dispatch() method has been changed to dispatch($event, string $eventName = null): object.
• The Event class has been removed in favor of Symfony\Contracts\EventDispatcher\Event.
• The TraceableEventDispatcherInterface has been removed.
• The WrappedListener class is now final.

4.4.0

• AddEventAliasesPass has been added, allowing applications and bundles to extend the event alias mapping used by RegisterListenersPass.
• Made the event attribute of the kernel.event_listener tag optional for FQCN events.

4.3.0

• The signature of the EventDispatcherInterface::dispatch() method should be updated to dispatch($event, string $eventName = null), not doing so is deprecated
• deprecated the Event class, use Symfony\Contracts\EventDispatcher\Event instead

4.1.0

• added support for invokable event listeners tagged with kernel.event_listener by default
• The TraceableEventDispatcher::getOrphanedEvents() method has been added.
• The TraceableEventDispatcherInterface has been deprecated.

4.0.0

• removed the ContainerAwareEventDispatcher class
• added the reset() method to the TraceableEventDispatcherInterface

3.4.0

... (truncated)

Commits

• 67a5f35 Merge branch '5.2' into 5.3
• 2ffa4bf Merge branch '4.4' into 5.2
• 047773e Fix CS in README files
• ff708cb Add #[As-prefix] to service attributes
• 36b7381 Deprecate configuring tag names and service ids in compiler passes
• bcbfcf5 feature #40234 [Console] Add ConsoleCommand attribute for declaring command...
• 7855ba3 Merge branch '5.2' into 5.x
• d08d6ec [EventDispatcher] fix registering subscribers twice on edge-case
• a7c8f37 [EventDispatcher] add missing "dispatcher" property on #[EventListener]
• d80457b [Console] Add ConsoleCommand attribute for declaring commands on PHP 8
• Additional commits viewable in compare view

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[dependabot]

The following labels could not be found: 3. to review, feature: dependencies.

[dependabot]

Superseded by #61.