build: exclude phpunit 12 from running on php 8.2

Author: lindyhopchris

.github/workflows/tests.yml

@@ -20,6 +20,16 @@ jobs:
         php: [8.2, 8.3, 8.4]
         laravel: [10, 11, 12]
         phpunit: [10.5, 11, 12]
+        exclude:
+          - php: 8.2
+            laravel: 12
+            phpunit: 12
+          - php: 8.2
+            laravel: 11
+            phpunit: 12
+          - php: 8.2
+            laravel: 10
+            phpunit: 12
 
     steps:
       - name: Checkout Code