Nextcloud 31 support

[sunjam]

For internal testing and notes. Do not expect support!!!!!! Please do report testing issues here.
Release Schedule
Nextcloud 31 Milestones

• Nextcloud 30 support #1957 in ncp
• Prepare for PHP 8.0 end of life server#40636 as support from php ends 11/26/2024
  • Allow PHP 8.3 server#40630
• feat(PHP): Allow PHP 8.4 server#49145
  • PHP 8.4 external storages support server#49151

Nextcloud 31

Daily	Date	Info
Daily	2025-01-03	External API freeze (relevant changes for other teams and app devs, like OCP and REST)
Beta 1	2025-01-07	Feature freeze, base for screenshots for launch marketing
Beta 2	2025-01-09
Beta 3	2025-01-14
Beta 4	2025-01-16
Beta 5	2025-01-21
RC 1	2025-01-23	String freeze
RC 2	2025-01-30
RC 3	2025-02-06
RC 4	2025-02-23
RC 5	2025-02-20
Final	2025-02-25