Merge branch '5.3' into 5.4

* 5.3:
  [Security] Do not overwrite already stored tokens for REMOTE_USER authentication
  [Validator] Fix validation for single level domains
  Fix redundant type casts
  Increased the reserved memory from 10k to 32k
  [DoctrineBridge] Add DbalLoggerTest to group legacy
  Leverage DBAL's getNativeConnection() method
  Fix idempotency of LocoProvider write method

Cloner/Data.php

@@ -209,7 +209,7 @@ public function __toString()
     public function withMaxDepth(int $maxDepth)
     {
         $data = clone $this;
-        $data->maxDepth = (int) $maxDepth;
+        $data->maxDepth = $maxDepth;
 
         return $data;
     }
@@ -222,7 +222,7 @@ public function withMaxDepth(int $maxDepth)
     public function withMaxItemsPerDepth(int $maxItemsPerDepth)
     {
         $data = clone $this;
-        $data->maxItemsPerDepth = (int) $maxItemsPerDepth;
+        $data->maxItemsPerDepth = $maxItemsPerDepth;
 
         return $data;
     }