refactor(security): replace generic event with severity enum

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

tests/php/Unit/Event/BruteForceDetectedEventTest.php

@@ -5,7 +5,7 @@ declare(strict_types=1);
 namespace KTXT\Unit\Event;
 
 use KTXC\Security\Event\BruteForceDetectedEvent;
-use KTXC\Security\Event\SecurityEvent;
+use KTXC\Security\Event\SecurityEventSeverity;
 use PHPUnit\Framework\Attributes\Test;
 use PHPUnit\Framework\Attributes\TestDox;
 use PHPUnit\Framework\TestCase;
@@ -33,7 +33,7 @@ final class BruteForceDetectedEventTest extends TestCase
             ['failureCount' => 5, 'windowSeconds' => 300],
             $event->getData(),
         );
-        self::assertSame(SecurityEvent::SEVERITY_CRITICAL, $event->getSeverity());
+        self::assertSame(SecurityEventSeverity::CRITICAL, $event->getSeverity());
     }
 
     #[Test]