Build on PHP 8.1

Author: driesvints

.github/workflows/tests.yml

@@ -13,11 +13,15 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [7.2, 7.3, 7.4, 8.0]
+        php: [7.2, 7.3, 7.4, 8.0, 8.1]
         laravel: [^6.0, ^7.0, ^8.0]
         exclude:
           - php: 7.2
             laravel: ^8.0
+          - php: 8.1
+            laravel: ^6.0
+          - php: 8.1
+            laravel: ^7.0
 
     name: PHP ${{ matrix.php }} - Laravel ${{ matrix.laravel }}