Update PHPUnit to a newer version #332
Description
The bee tests currently use PHPUnit 8
According to https://phpunit.de/supported-versions.html PHPUnit 8 reached the end of bugfix support in February 2023 though it is not yet end of life and I think might still be getting security releases.
| Major Version | PHP Compatibility | Initial Release | End of Bugfix Support | End of Life |
|---|---|---|---|---|
| PHPUnit 10 | >= PHP 8.1 | February 3, 2023 | February 7, 2025 | To be determined |
| PHPUnit 9 | >= PHP 7.3 | February 7, 2020 | February 2, 2024 | To be determined |
| PHPUnit 8 | >= PHP 7.2 | February 1, 2019 | February 3, 2023 | To be determined |
Table copied on 2023-09-21
I think it would be reasonable to move to PHPUnit 9 but I don't think we're ready for 10 as there are probably quite a few sites still with PHP 7.4 that the bee testing couldn't cover.
Need to test whether using PHPUnit 9 causes any issues. There are some Backward Incompatibilities that might need addressing: https://phpunit.de/announcements/phpunit-9.html