Add PHP 8.5 to CI workflow matrix

Author: kitloong

.github/workflows/tests.yml

@@ -77,7 +77,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [ 8.2, 8.3, 8.4 ]
+        php: [ 8.2, 8.3, 8.4, 8.5 ]
         laravel: [ 11.*, 12.* ]
 
     name: PHP ${{ matrix.php }} - Laravel ${{ matrix.laravel }}