✨ Introduce check for PHP 8.3, 8.4 in CI

Author: andrew-demb

.github/workflows/test.yaml

@@ -12,7 +12,7 @@ jobs:
         strategy:
             matrix:
                 install-args: ['']
-                php-version: ['8.2']
+                php-version: ['8.2', '8.3', '8.4']
             fail-fast: false
         steps:
             # Cancel previous runs of the same branch