composer update

vendor/symfony/http-kernel/DataCollector/MemoryDataCollector.php

@@ -18,6 +18,8 @@ use Symfony\Component\HttpFoundation\Response;
  * MemoryDataCollector.
  *
  * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @final since Symfony 4.4
  */
 class MemoryDataCollector extends DataCollector implements LateDataCollectorInterface
 {
@@ -28,8 +30,10 @@ class MemoryDataCollector extends DataCollector implements LateDataCollectorInte
 
     /**
      * {@inheritdoc}
+     *
+     * @param \Throwable|null $exception
      */
-    public function collect(Request $request, Response $response, \Exception $exception = null)
+    public function collect(Request $request, Response $response/*, \Throwable $exception = null*/)
     {
         $this->updateMemoryUsage();
     }
@@ -89,7 +93,7 @@ class MemoryDataCollector extends DataCollector implements LateDataCollectorInte
         return 'memory';
     }
 
-    private function convertToBytes($memoryLimit)
+    private function convertToBytes(string $memoryLimit): int
     {
         if ('-1' === $memoryLimit) {
             return -1;