Update to PHPMailer 7.0.0

[SirLouen]

This update is only bureaucratic. There was a SemVer mistake with versioning, so basically the current version we are shipping only needs a bump in numbering to be compliant.

I attach below the minuscule patch.

More info about the update
​https://github.com/PHPMailer/PHPMailer/releases/tag/v7.0.0

Trac ticket: https://core.trac.wordpress.org/ticket/64101

The v6.12.0 version have some file changes ​https://github.com/PHPMailer/PHPMailer/compare/v6.12.0...v7.0.0 why 7.0 didn't have any 🤔

It was a semver update mistake, better explained in Trac ticket

Thanks! Approved ✅

[wildworks]

Since the 6.9 Beta1 release is coming soon, let's punt this ticket to 7.0. If you can commit before Beta1, feel free to change the milestone back to 6.9.

[SergeyBiryukov]

In 61249:

External Libraries: Upgrade PHPMailer to version 7.0.0.

This is exactly the same as version 6.11.1 but bumps the major version number to indicate the presence of a backward compatibility break in child classes.

Specifically, lang(), setLanguage(), and $language are now static, and should be called statically.

References:

• ​PHPMailer 7.0.0 release notes
• ​Full list of changes in PHPMailer 7.0.0

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

Props SirLouen.
Fixes #64101.

[peterwilsoncc]

As the current version in the 6.9 branch was retagged upstream, thus the small changeset on this ticket, I think it would be good to backport [61249].

Specifically, lang(), setLanguage(), and $language are now static, and should be called statically.

Additionally, will the ​code in `WP_Locale_Switcher::change_locale()` need an update given the above?

[SirLouen]

Replying to peterwilsoncc:

Additionally, will the code in WP_Locale_Switcher::change_locale() need an update given the above?

This update was a little tricky. This update was done in a previous point version, but it violated the semver rules, hence, a forced update to 7.0.0 without any changes (this) was introduced after. The code you mention is already updated and merged into 6.9 (prev to RC1).

If you want you can leave this fixed into 7.0 without the need of a backport, no real changes are worthy here.

[peterwilsoncc]

@SirLouen I think it would be good to backport the version number changes as the PHPMailer 6.11.0 and 6.11.1 include changes that were reverted in 6.12.0 but retained in 7.0.0. If a developer is calling version_compare() to determine if these changes are included, it will need to be a messy condition if ( version >= 7.0.0 || version == 6.11.0 || version == 6.11.1 )

Additionally, will the code in WP_Locale_Switcher::change_locale() need an update given the above?

No, because I misread the code on Sunday.

[SirLouen]

Replying to peterwilsoncc:

@SirLouen I think it would be good to backport the version number changes as the PHPMailer 6.11.0 and 6.11.1 include changes that were reverted in 6.12.0 but retained in 7.0.0. If a developer is calling version_compare() to determine if these changes are included, it will need to be a messy condition if ( version >= 7.0.0 || version == 6.11.0 || version == 6.11.1 )

True, and backporting is pretty simple.

[desrosj]

[61249] looks good to backport. Thanks for suggesting that, @peterwilsoncc!

[peterwilsoncc]

In 61254:

External Libraries: Upgrade PHPMailer to version 7.0.0.

This is exactly the same as version 6.11.1 but bumps the major version number to indicate the presence of a backward compatibility break in child classes.

Specifically, lang(), setLanguage(), and $language are now static, and should be called statically.

References:

• ​PHPMailer 7.0.0 release notes
• ​Full list of changes in PHPMailer 7.0.0

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

Reviewed by desrosj.
Merges [61249] to the 6.9 branch.

Props SirLouen.
Fixes #64101.