Update to PHPMailer 7.0.2

[SirLouen]

PHPMailer 7.0.2 last release:
​https://github.com/PHPMailer/PHPMailer/releases/tag/v7.0.2

Critical for WP because it brings the Sender address fix to PHPMailer.

Closes #64368

Trac ticket: https://core.trac.wordpress.org/ticket/64491

[SergeyBiryukov]

In 61468:

External Libraries: Upgrade PHPMailer to version 7.0.2.

The latest version:

• Includes a fix for sendmail parameter problems in WordPress.
• Reduces memory consumption when sending large attachments.

References:

• ​PHPMailer 7.0.2 release notes
• ​Full list of changes in PHPMailer 7.0.2

Follow-up to [54937], [55557], [56484], [57137], [59246], [59481], [60623], [60813], [60888], [61249].

Props SirLouen, robinvandervliet, desrosj, siliconforks, digitalblanket, studiomondiale, jorbin, westonruter, dmsnell, zoe20, Monarobase, amanandhishoe, SergeyBiyrukov.
Fixes #64491. See #64368.

[SergeyBiryukov]

Reopening for 6.9.1 consideration.

I didn’t see any explanation for the mode of operation, so I’m basing my question on what it appears to be doing. It appears to try and remove the -f arg out of the sendmail_path and manually set the Sender value.

Why was this approach taken instead of trying to avoid setting ->Sender in PHP when -f is detected?

[jorbin]

I'm unsure if this is necessary for 6.9.1 if the outcome of #64368 is to revert [61010], especially in light of the unanswered questions on the PR (which came in post commit)

[wildworks]

I also suggest reverting [61010] in the 6.9 branch and not backporting [61468].

[SirLouen]

I don't want to keep beating this dead horse but seriously: not bringing this to 6.9.1 is a major error specially if you are reverting [61010]

If this is at least backported, people with the issue could easily test it during 6.9.1 without any affection (as this is an fix ON TOP of the "problem" is not different behaviour).

Whoever is willing to test (I doubt that anyone is willing to test this, but who knows), could easily and manually switch the setFrom in their machines and see the resulting mailing behaviour, but if this patch is not in place, the whole setup for testing is way more complex and I doubt that a single soul will be willing to do it at all.

[jorbin]

Since wp_mail is pluggable, wouldn't a plugin that is designed to help testing in 6.9.1 be able to include a different version of PHPMailer?

@SergeyBiryukov since you reopened this, what are your thoughts? Do you think this is still necessary in light of the revert of [61010]?

[jorbin]

Based on lack of response, moving this out of the 6.9.1 milestone and closing as this was committed in 7.0

[audrasjb]

We'll need to mention this in the Field Guide.