Chore(deps-dev): Update symfony/event-dispatcher requirement from ~5.4 to ~7.3 in /tests/integration

[dependabot]

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

Release notes

Sourced from symfony/event-dispatcher's releases.

v7.3.0

Changelog (symfony/event-dispatcher@v7.3.0-RC1...v7.3.0)

• no significant changes

Changelog

Sourced from symfony/event-dispatcher's changelog.

CHANGELOG

6.0

• Remove LegacyEventDispatcherProxy

5.4

• Allow #[AsEventListener] attribute on methods

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.

... (truncated)

Commits

• 497f73a Don't enable tracing unless the profiler is enabled
• 045a5ba replace assertEmpty() with stricter assertions
• 910c5db Merge branch '7.1' into 7.2
• 87254c7 Merge branch '6.4' into 7.1
• 0ffc480 Merge branch '5.4' into 6.4
• 72982eb Add PR template and auto-close PR on subtree split repositories
• 1b5d04e Code style change in @PER-CS2.0 affecting @Symfony (parentheses for anony...
• 2bde43f Update .gitattributes
• 8191468 Prefix all sprintf() calls
• 9fa7f7a Merge branch '7.0' into 7.1
• Additional commits viewable in compare view

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