Merge branch '5.2' into 5.x

* 5.2:
  [PhpUnitBridge] CS fix
  [Notifier] Only use sprintf instead of sprintf and string concat
  [PhpUnitBridge] Fix PHP 5.5 compatibility
  Fix exception thrown by Form when converting UUID
  [Notifier] Remove trailing argument in tests
  [Serializer] Make fabbot happy with 5.2 tests CS
  Add missing param annotation abouts $fileLinkFormat
  [HttpClient] Use decoration instead of class replacement for mock factory
  [Form] Fixed StringUtil::trim() to trim ZERO WIDTH SPACE (U+200B) and SOFT HYPHEN (U+00AD)
  23412 Stop treating multiline resources as globs

Author: nicolas-grekas

Exception/IncompleteDsnException.php

@@ -24,7 +24,7 @@ public function __construct(string $message, string $dsn = null, ?\Throwable $pr
     {
         $this->dsn = $dsn;
         if ($dsn) {
-            $message = sprintf('Invalid "%s" notifier DSN: ', $dsn).$message;
+            $message = sprintf('Invalid "%s" notifier DSN: %s', $dsn, $message);
         }
 
         parent::__construct($message, 0, $previous);