Use assertCount

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

phpstan-baseline.neon

@@ -16467,12 +16467,6 @@ parameters:
 			count: 1
 			path: tests/unit/PluginsTest.php
 
-		-
-			message: '#^You should use assertCount\(\$expectedCount, \$variable\) instead of assertSame\(\$expectedCount, \$variable\-\>count\(\)\)\.$#'
-			identifier: phpunit.assertCount
-			count: 1
-			path: tests/unit/Properties/Options/OptionsPropertyGroupTest.php
-
 		-
 			message: '''
 				#^Call to deprecated method getInstance\(\) of class PhpMyAdmin\\Config\:

tests/unit/Properties/Options/OptionsPropertyGroupTest.php

@@ -71,6 +71,6 @@ class OptionsPropertyGroupTest extends AbstractTestCase
         $this->stub->addProperty($propertyItem);
         $propertyItem2 = new BoolPropertyItem();
         $this->stub->addProperty($propertyItem2);
-        self::assertSame(2, $this->stub->count());
+        self::assertCount(2, $this->stub);
     }
 }