chore(PHP): Drop 8.2 for Nextcloud 35

[provokateurin]

https://www.php.net/supported-versions.php

PHP 8.2 will stop getting security updates during the lifetime of Nextcloud 35.

Redhat 8.3 and 8.4: https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/10/html/installing_and_using_dynamic_programming_languages/using-the-php-scripting-language#installing-the-php-scripting-language

SLES 16 has 8.4: https://documentation.suse.com/sles/16.0/html/SLE-packages-lifecycle/index.html

Debian 13 Trixi has 8.4: https://packages.debian.org/trixie/php8.4

Ubuntu 26.04: 8.5.x
Ubuntu 24.04: 8.3.x

[AndyScherzinger]

In order to drop 8.2 the check needs to be done on the lower bound of supported OS/versions in all cases. Looking at https://github.com/nextcloud/documentation/blob/master/admin_manual/installation/system_requirements.rst?plain=1#L17-L28 it needs to be checked if the lowest versions support 8.3 - alternatively we can of course discuss if dropping an old OS version is a feasible option, but that might not be the case on all OS derivates.

@provokateurin @sorbaugh

[provokateurin]

@AndyScherzinger see the PR description. @susnux researched this and it seems to be fine to drop it, because all distros have at least 8.3.

[susnux]

@AndyScherzinger from the supported distros list:

• Ubuntu 26.04: ✅ 8.5
• Ubuntu 24.04 ✅ 8.3
• Ubuntu 22.04 ❌ only using 3rdparty repositories but they do not even support 8.2 ❗
• Red Hat Enterprise Linux 10: ✅ 8.3 and 8.4
• Red Hat Enterprise Linux 9: ✅ 8.3
• Debian 13 (Trixie): ✅ 8.4
• Debian 12 (Bookworm): ❌ needs 3rdparty
• SUSE Linux Enterprise Server 16: ✅ 8.4
• SUSE Linux Enterprise Server 15 SP6 (or later): ⚠️ need to bump to SP7 but then it has 8.3
• openSUSE Leap 16 ✅ (same as SLES 16)
• CentOS Stream: ✅
• Alpine Linux: ✅

[AndyScherzinger]

@susnux thanks for the detailed analysis, than I'd say fine to drop 8.2 but needs dropping of Ubuntu 22 and Debian 12 👍

[provokateurin]

Depends on #61158

[susnux]

docs: nextcloud/documentation#15119

[nickvergessen]

Further refs:

• fix: Drop PHP 8.2 in Nextcloud 35 nextcloud-deps/ocp#42
• fix: Drop PHP 8.2 in Nextcloud 35 3rdparty#2477

It's a bit sad to do this right before the weekend, as all psalm.xml files need to be bumped to PHP 8.3 as min version to pass CI which means dependabot updates tomorrow will be red everywhere 🙈