Slugify Collectives and Pages (tests)

Signed-off-by: Kostiantyn Miakshyn <[email protected]>

tests/Unit/Service/CollectiveServiceTest.php

@@ -213,7 +213,7 @@ public function testCreate(): void {
 			->willReturn($collective);
 		[$collective, $info] = $this->service->createCollective($this->userId, 'de', 'free');
 		self::assertIsCallable([$collective, 'jsonSerialize']);
-		self::assertEqualsCanonicalizing([
+		self::assertEquals([
 			'id' => 123,
 			'slug' => 'free',
 			'circleId' => null,