Merge pull request #58 from sebdesign/php8.1

Test against PHP 8.1

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [8.0, 7.4, 7.3, 7.2]
+        php: [8.1, 8.0, 7.4, 7.3, 7.2]
         laravel: [^8.0, ^7.0]
         include:
           - laravel: ^7.0
@@ -25,6 +25,8 @@ jobs:
         exclude:
           - laravel: ^8.0
             php: 7.2
+          - laravel: ^7.0
+            php: 8.1
 
     name: P${{ matrix.php }} - L${{ matrix.laravel }}