ci: Laravel 11 PHP Matrix shouldn't PHP 8.1, as that is not supported anymore.

Author: iamriajul

.github/workflows/testing.yml

@@ -60,8 +60,16 @@ jobs:
       fail-fast: true
 
       matrix:
-        laravel: [ '11', '10', '9' ]
-        php: [ '8.3', '8.2', '8.1' ]
+        laravel: [
+          '11',
+          '10',
+          '9'
+        ]
+        php: [
+          ['8.4', '8.3', '8.2'],
+          ['8.3', '8.2', '8.1'],
+          ['8.3', '8.2', '8.1']
+        ]
         os: [ ubuntu-latest ]
 
     steps: