bump library version

fsfe.org/cgi-bin/PHPMailer/Exception.php

@@ -1,4 +1,5 @@
 <?php
+
 /**
  * PHPMailer Exception class.
  * PHP Version 5.5.
@@ -9,10 +10,10 @@
  * @author    Jim Jagielski (jimjag) <jimjag@gmail.com>
  * @author    Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
  * @author    Brent R. Matzelle (original founder)
- * @copyright 2012 - 2017 Marcus Bointon
+ * @copyright 2012 - 2020 Marcus Bointon
  * @copyright 2010 - 2012 Jim Jagielski
  * @copyright 2004 - 2009 Andy Prevost
- * @license   http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
+ * @license   https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html GNU Lesser General Public License
  * @note      This program is distributed in the hope that it will be useful - WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.
@@ -34,6 +35,6 @@ class Exception extends \Exception
      */
     public function errorMessage()
     {
-        return '<strong>' . htmlspecialchars($this->getMessage()) . "</strong><br />\n";
+        return '<strong>' . htmlspecialchars($this->getMessage(), ENT_COMPAT | ENT_HTML401) . "</strong><br />\n";
     }
 }