Allow Symfony 6 / Laravel 9 (#540)

* Allow Symfony 6

* Update composer.json

* Test Laravel 9

* Update composer.json

Author: barryvdh

.github/workflows/run-tests.yml

@@ -33,9 +33,12 @@ jobs:
             php: 7.3
             dependency-version: prefer-lowest
           - laravel: ^8
+            php: 8.0
+            dependency-version: prefer-stable
+          - laravel: ^9
             php: 8.1
             dependency-version: prefer-stable
-            
+
     name: P${{ matrix.php }} - L${{ matrix.laravel }} - ${{ matrix.dependency-version }}
 
     steps:

composer.json

@@ -17,8 +17,8 @@
         "php": ">=7.2",
         "illuminate/support": "^6|^7|^8|^9",
         "illuminate/contracts": "^6|^7|^8|^9",
-        "symfony/http-foundation": "^4|^5",
-        "symfony/http-kernel": "^4.3.4|^5",
+        "symfony/http-foundation": "^4|^5|^6",
+        "symfony/http-kernel": "^4.3.4|^5|^6",
         "asm89/stack-cors": "^2.0.1"
     },
     "require-dev": {