PHP Requirement Change: 8.1 to 8.2

[ssddanbrown]

Changes from PHP 8.1 to PHP 8.2 for next feature release.

Todo

• Update code-base minimums
• Update CI processes
• Update scripts as required
  • 24.04 install script - Installs php8.3 (OS packages)
  • 22.04 install script - Needs updating, installs php8.1 (original OS packages) - Done via commit
  • 20.04 install script - Installs PHP 8.2 already, originally php7.4
  • 18.04 install script - Time to remove from site, well outside of standard support (Apr 2023)
• Review guidance in "Updating PHP" docs.
• Check popular distribution options:
  • Linuxserver docker image - 8.3
  • Solidnerd docker image - 8.3
  • Hassio setup - 8.3
  • Turnkey Linux - 8.2
  • Proxmox helper scripts - 8.2

Docs Update

• Blogpost release notice
• Update page - Version notice
• Install page - Update install script details with new php versions used. - Done via commit
• Install page - Update requirements.
• "Updating PHP" docs - Update min php version mention