Update dependencies

[akunzai]

No description provided.

[Copilot]

Pull request overview

Updates PHP/Joomla-related dependencies and devcontainer defaults to newer patch/minor versions, aligning the development/tooling stack with current upstream releases.

Changes:

• Bumped Joomla CMS from 6.0.2 to 6.0.3 across Composer metadata and devcontainer Docker build args.
• Updated dev tooling dependencies in composer.lock (notably friendsofphp/php-cs-fixer, PHPStan, Symfony components).
• Updated the Joomla 5 devcontainer override to use Joomla 5.4.3.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.

File	Description
composer.lock	Refreshes locked versions for dev tooling (php-cs-fixer, PHPStan, Symfony, etc.) and Joomla CMS package entry.
composer.json	Updates declared dev dependency constraints and Joomla CMS package repository metadata to 6.0.3.
.devcontainer/joomla/Dockerfile	Updates the default Joomla 6 image version used by the devcontainer build.
.devcontainer/compose.joomla5.yml	Updates the Joomla 5 override to pull/build Joomla 5.4.3.

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[Copilot]

composer.json still declares PHP >=8.1, but the updated dev dependency set (via php-cs-fixer 3.94 / sebastian-diff 8 / Symfony 8 pulled in by the lockfile) requires PHP >=8.4. As a result, composer install (with dev deps) will fail on PHP 8.1–8.3 even though the root constraint suggests it should work. Consider either (a) raising the root PHP requirement to match the tooling baseline, or (b) explicitly adding a php: >=8.4 constraint under require-dev and updating contributor docs so the runtime requirement and dev-tooling requirement are clearly separated.

Suggested change

	"require-dev": {
	"require-dev": {
	"php": ">=8.4",