[wp-trac] [WordPress Trac] #55277: Update PHPMailer to 6.6.0

[WordPress Trac]

#55277: Update PHPMailer to 6.6.0
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 Reporter:  jrf                 |      Owner:  (none)
     Type:  task (blessed)      |     Status:  new
 Priority:  normal              |  Milestone:  6.0
Component:  External Libraries  |    Version:  trunk
 Severity:  normal              |   Keywords:  needs-patch
  Focuses:                      |
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 PHPMailer 6.6.0 has just been released.

 From the release notes:
 > Prior to this version, any OAuth provider needed to extend the provided
 OAuth base class, and this made it difficult to use with libraries other
 than ones based on the default league client packages. > The OAuth
 property now accepts anything that implements the OAuthProviderInterface,
 making it much easier to use things like Google's own OAuth classes.
 Existing implementations that extend the provided OAuth base class will
 still work, as that base class now implements this interface too. Thanks
 to @pdscopes.
 >
 > When TLS errors occurred in PHPMailer, the error messages were often
 missing important info that might help diagnose/solve the problem. These
 error messages should now be more informative. A minor change is that a
 TLS error on SMTP connect will now throw an exception if exceptions are
 enabled. Thanks to @miken32.


 The version included with WP should be updated.

 Full details:

 * https://github.com/PHPMailer/PHPMailer/releases/tag/v6.6.0
 * https://github.com/PHPMailer/PHPMailer/compare/v6.5.4...v6.6.0

 I've reviewed the diff and I don't see anything which concerns me, so I
 would recommend an update at the earliest convenience.

 Previously: #53430, #53953, #54514, #55187

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Ticket URL: <https://core.trac.wordpress.org/ticket/55277>
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