[wp-trac] [WordPress Trac] #54514: Update PHPMailer to 6.5.3

[WordPress Trac]

#54514: Update PHPMailer to 6.5.3
--------------------------------+-------------------------
 Reporter:  jrf                 |      Owner:  (none)
     Type:  task (blessed)      |     Status:  new
 Priority:  normal              |  Milestone:  5.9
Component:  External Libraries  |    Version:
 Severity:  normal              |   Keywords:  needs-patch
  Focuses:                      |
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 PHPMailer 6.5.3 has just been released and includes official PHP 8.1
 support, as well as some small bugfixes, including one for PHP 5.6 cross-
 version support.

 The version included with WP should be updated.

 Full details:

 * https://github.com/PHPMailer/PHPMailer/releases/tag/v6.5.2
 * https://github.com/PHPMailer/PHPMailer/releases/tag/v6.5.3
 * https://github.com/PHPMailer/PHPMailer/compare/v6.5.1...v6.5.3

 I've reviewed the diff and the changes look sensible to me, so I would
 recommend an update at the earliest convenience.

 Previously: #53430, #53953

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Ticket URL: <https://core.trac.wordpress.org/ticket/54514>
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