Add php 8.3 & 8.4 to the PHP CI workflow

Author: aalbarca

.github/workflows/php.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [7.4, 8.0, 8.1, 8.2]
+        php: [8.1, 8.2, 8.3, 8.4]
 
     name: Tests on PHP ${{ matrix.php }} - ${{ matrix.stability }}