Add Symfony 8 compatibility support

[overtrue]

Summary

• widen the Symfony component constraints in composer.json to include ^8.0
• update the main PHPUnit workflow to actually provision the matrix PHP version via shivammathur/setup-php
• add a dedicated PHP-8.4-symfony-8 job in .github/workflows/test.yml so Symfony 8 compatibility stays explicitly covered in CI

Testing

• composer validate --no-check-publish
• vendor/bin/phpunit
• verified in a clean copy that composer update -W resolves to Symfony 8 packages successfully and vendor/bin/phpunit still passes

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Project	Deployment	Actions	Updated (UTC)
easywechat	Ready	Preview, Comment	Apr 3, 2026 0:59am

[Copilot]

Pull request overview

This PR expands the library’s declared compatibility to Symfony 8 and updates CI so the PHP matrix versions are actually provisioned, with an explicit job ensuring Symfony 8 stays covered.

Changes:

• Widen Symfony component version constraints in composer.json to include ^8.0.
• Update the PHPUnit GitHub Actions job to install the requested matrix PHP version via shivammathur/setup-php.
• Add a dedicated PHP-8.4-symfony-8 CI job that forces Symfony 8 dependencies and runs the test suite.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
composer.json	Extends Symfony component constraints (runtime + dev) to support Symfony 8.
.github/workflows/test.yml	Fixes PHP matrix provisioning and adds a dedicated Symfony 8 test job.

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