Add PHP 8.4 to CI #534

Job	Run time
Coding Standards	16s
PHP 8.1 (phpunit 10) Test on ubuntu-latest	6m 38s
Static Analysis	48s
PHP 8.2 (phpunit 10) Test on ubuntu-latest	7m 30s
PHP 8.0 Test on ubuntu-latest	7m 47s
PHP 8.3 (phpunit 10) Test on ubuntu-latest	7m 55s
PHP 8.1 Test on ubuntu-latest	6m 16s
PHP 8.0 Test dev dependencies on ubuntu-latest	13m 41s
PHP 8.1 Test dev dependencies on ubuntu-latest	7m 25s
PHP 8.3 (lowest) Test on ubuntu-latest	6m 23s
PHP 8.2 Test on ubuntu-latest	6m 27s
PHP 8.2 Test dev dependencies on ubuntu-latest	7m 28s
PHP 8.3 Test on ubuntu-latest	7m 41s
PHP 8.3 Test dev dependencies on ubuntu-latest	6m 27s
PHP 8.3 Test on macos-latest	7m 31s
PHP 8.4 Test on ubuntu-latest	8m 28s
PHP 8.4 (phpunit 10) Test on ubuntu-latest	7m 35s
PHP 8.4 Test dev dependencies on ubuntu-latest	6m 23s
PHP 8.3 Test on windows-latest	5m 24s
	2h 8m 3s

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