Update IReader.php

Author: oleibman

src/PhpSpreadsheet/Reader/IReader.php

@@ -19,7 +19,7 @@ interface IReader
     public const READ_DATA_ONLY = 2;
 
     /**
-     * @deprecated 3.1.0 use IGNORE_EMPTY_CELLS instead.
+     * @deprecated 3.4.0 use IGNORE_EMPTY_CELLS instead.
      */
     public const SKIP_EMPTY_CELLS = self::IGNORE_EMPTY_CELLS;