[6.x] Carbon 3

[duncanmcclean]

This pull request adds support for Carbon 3.

Since it's an optional upgrade, and we have to support both Carbon 2 & 3 anyway (since Laravel 11 supports both versions), I figured we could merge this into 5.x without needing to wait until Statamic 6.

[jasonvarga]

Please keep this targeting master.

If someone does a composer update and unintentionally upgrades to Carbon 3, there might be some breaking changes they'd need to deal with.

[duncanmcclean]

Changed the target branch back to master.

I've kept the Carbon v2 logic for now as Laravel 11 supports it alongside v3. We can probably remove it in Statamic 7?

[jasonvarga]

Yup keeping v2 is good 👌

[the-pulli]

What's a bit annoying in v5 are these deprecation warnings on composer update/install with PHP 8.4:

Deprecated: Carbon\Traits\Date::getDaysFromStartOfWeek(): Implicitly marking parameter $weekStartsAt as nullable is deprecated, the explicit nullable type must be used instead in /pulli/vendor/nesbot/carbon/src/Carbon/Traits/Date.php on line 1394

Deprecated: Carbon\Traits\Date::setDaysFromStartOfWeek(): Implicitly marking parameter $weekStartsAt as nullable is deprecated, the explicit nullable type must be used instead in /pulli/vendor/nesbot/carbon/src/Carbon/Traits/Date.php on line 1412

Deprecated: Carbon\Traits\Date::utcOffset(): Implicitly marking parameter $minuteOffset as nullable is deprecated, the explicit nullable type must be used instead in /pulli/vendor/nesbot/carbon/src/Carbon/Traits/Date.php on line 1481

Deprecated: Carbon\Traits\Localization::locale(): Implicitly marking parameter $locale as nullable is deprecated, the explicit nullable type must be used instead in /pulli/vendor/nesbot/carbon/src/Carbon/Traits/Localization.php on line 447

Deprecated: Carbon\Traits\Test::setDefaultTimezone(): Implicitly marking parameter $date as nullable is deprecated, the explicit nullable type must be used instead in /pulli/vendor/nesbot/carbon/src/Carbon/Traits/Test.php on line 203

Deprecated: Return type of Carbon\Traits\Date::createFromTimestamp($timestamp, $tz = null) should either be compatible with DateTime::createFromTimestamp(int|float $timestamp): static, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /pulli/vendor/nesbot/carbon/src/Carbon/Traits/Timestamp.php on line 29

Deprecated: Carbon\CarbonTimeZone::toOffsetName(): Implicitly marking parameter $date as nullable is deprecated, the explicit nullable type must be used instead in /pulli/vendor/nesbot/carbon/src/Carbon/CarbonTimeZone.php on line 158

Deprecated: Carbon\CarbonTimeZone::toOffsetTimeZone(): Implicitly marking parameter $date as nullable is deprecated, the explicit nullable type must be used instead in /pulli/vendor/nesbot/carbon/src/Carbon/CarbonTimeZone.php on line 172

Deprecated: Carbon\CarbonTimeZone::toRegionName(): Implicitly marking parameter $date as nullable is deprecated, the explicit nullable type must be used instead in /pulli/vendor/nesbot/carbon/src/Carbon/CarbonTimeZone.php on line 188

Deprecated: Carbon\CarbonTimeZone::toRegionTimeZone(): Implicitly marking parameter $date as nullable is deprecated, the explicit nullable type must be used instead in /pulli/vendor/nesbot/carbon/src/Carbon/CarbonTimeZone.php on line 230

With Carbon v3 they're gone.

[jasonvarga]

I think we'll probably get rid of Carbon 2 in v6 after all.