[wp-trac] [WordPress Trac] #28909: Update PHPMailer to 5.2.10

[WordPress Trac]

#28909: Update PHPMailer to 5.2.10
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 Reporter:  MattyRob                |       Owner:  ocean90
     Type:  task (blessed)          |      Status:  assigned
 Priority:  normal                  |   Milestone:  4.3
Component:  External Libraries      |     Version:  4.0
 Severity:  normal                  |  Resolution:
 Keywords:  has-patch dev-feedback  |     Focuses:
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Comment (by dd32):

 To be clear; It's a "bug" in PHPMailer that the Encoding variable (and
 potentially others) isn't reset between mail calls.
 It's not a serious bug however, as it doesn't affect the ability to send
 emails, it only trips up our unit testing.

 Based on that, I think I'd be behind the angle of working around it in our
 `MockMailer` for now, and submitting a issue upstream.

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Ticket URL: <https://core.trac.wordpress.org/ticket/28909#comment:49>
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