Upstream dependency got updated - PHP with version 8.4.1

[ember-nexus-bot]

Open tasks:

• [x] Compare Dockerfile of latest PHP alpine CLI with ./docker/Dockerfile on intermediate build php_embed.
• If there are updates:
  • [x] Update local Dockerfile.
  • [x] Add changelog entry.
  • [ ] Release new patch or minor release, depending on PHP version upgrade.

[Syndesi]

Todo:

• [x] Check how to fix the following notice: WARN: UndefinedVar: Usage of undefined variable '$PHP_CFLAGS' (line 12)
• [x] Check how to fix the following notice: Deprecated: Constant E_STRICT is deprecated in /usr/local/lib/php/pearcmd.php on line 441
• [x] Compare Dockerfile of Alpine 3.20 PHP 8.3 CLI with Alpine 3.20 PHP 8.4 CLI and those of Ember Nexus.
• [x] Check whether debug output should be disabled for the time being. If it is getting disabled, then we should have some ci test or open issue to periodically check for new deprecations. See also https://stackoverflow.com/questions/24559842/turning-off-deprecation-warnings-in-php-ini-file-wamp .

[Syndesi]

Deprecation messages can not be easily deactivated, and even if I do, then it might turn out to be a problem for new deprecations in the future.

Therefore I will halt further progress in this ticket until upstream fixes are rolled out, especially https://github.com/thecodingmachine/safe/issues/442 (already on the way)