Bump PHP to 8.5

[Copilot]

Type

• Bugfix
• Feature
• Documentation
• Refactoring (e.g. Style updates, Test implementation, etc.)
• Other (please describe): Docker base image

Checklist

• Code updated to current develop branch head
• Passes CI checks
• Is a part of an issue
• Tests added for the bugfix or newly implemented feature, describe below why if not
• Changelog is updated
• Documentation of code and features exists

Changes

• Docker base image updated: php:8.4-fpm-alpine → php:8.5-fpm-alpine
• Composer PHP requirement: ^8.4 → ^8.5
• CI workflow PHP version environment variables updated across 3 workflows: ci.yml, upload-locales.yml, pull-locales.yml
• Updated CHANGELOG.md with PHP 8.5 bump entry under [Unreleased] section

Other information

PHP 8.5.2 confirmed available. The composer.lock file will be regenerated automatically when CI runs with PHP 8.5.

No tests added - version bump only, validated by CI pipeline execution.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Bump PHP to 8.5</issue_title>
<issue_description>Bump PHP used in docker container and all CI pipelines to PHP 8.5</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Bump PHP to 8.5 #2813

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[samuelwei]

@copilot Update changelog

[Copilot]

@copilot Update changelog

Updated in commit d6e3970.

[samuelwei]

Waiting for PHP 8.5 compatible release of https://github.com/SpartnerNL/Laravel-Excel