Remove duplicate job configuration for PHP 8.5 and Laravel 12 in workflow

Author: MrPunyapal

.github/workflows/tests.yml

@@ -28,10 +28,6 @@ jobs:
         include:
           - php: 8.5
             laravel: 12
-            os: ubuntu-22.04
-          - php: 8.5
-            laravel: 12
-            os: windows-latest
 
     name: PHP ${{ matrix.php }} - Laravel ${{ matrix.laravel }} - ${{ matrix.os }}