Bump symfony/event-dispatcher from 3.1.3 to 3.4.30

[dependabot-preview]

Bumps symfony/event-dispatcher from 3.1.3 to 3.4.30.

Changelog

Sourced from symfony/event-dispatcher's changelog.

CHANGELOG

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.

4.3.0

• 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

• Implementing TraceableEventDispatcherInterface without the reset() method has been deprecated.

3.3.0

• The ContainerAwareEventDispatcher class has been deprecated. Use EventDispatcher with closure factories instead.

3.0.0

• The method getListenerPriority($eventName, $listener) has been added to the
  EventDispatcherInterface.
• The methods Event::setDispatcher(), Event::getDispatcher(), Event::setName()
  and Event::getName() have been removed.
  The event dispatcher and the event name are passed to the listener call.

2.5.0

... (truncated)

Commits

• f18fdd6 collect called listeners information only once
• e942daa Use willReturn() instead of will(returnValue()).
• a088aaf [EventDispatcher] cleanup
• 61876bf Fix hardcoded hotPathTagName
• ec625e2 Apply php-cs-fixer rule for array_key_exists()
• 256b96c [EventDispatcher] Fix unknown priority
• ed5be16 fixed short array CS in comments
• 98f4d5b switched array() to []
• d1cdd46 minor #29743 [EventDispatcher] Fixed phpdoc on interface (samnela)
• d2d7e29 [EventDispatcher] Fixed phpdoc on interface
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #112.