Ensure Laravel 9 is properly supported (#10)

* Update CI workflow with newer versions

* Update composer package versions to support all PHP/Laravel combinations

.github/workflows/ci.yml

@@ -12,13 +12,20 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        laravel: [7.30.*, 8.*]
-        php: [7.4, 8.0]
+        laravel: [7.30.*, 8.*, 9.*]
+        php: [7.4, 8.0, 8.1]
         include:
           - laravel: 7.30.*
             testbench: 5.*
           - laravel: 8.*
             testbench: 6.*
+          - laravel: 9.*
+            testbench: 7.*
+        exclude:
+          - laravel: 9.*
+            php: 7.4
+          - laravel: 7.30.*
+            php: 8.1
 
     name: P${{ matrix.php }} - L${{ matrix.laravel }}
 

composer.json

@@ -9,12 +9,12 @@
     ],
     "require": {
         "php": "^7.4|^8.0",
-        "guzzlehttp/psr7": "^1.8|^2.0",
+        "guzzlehttp/psr7": "^1.8 || ^2.0",
         "league/openapi-psr7-validator": "^0.18",
         "spatie/laravel-package-tools": "^1.11"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^2.18",
+        "friendsofphp/php-cs-fixer": "^2.18 || ^3.1",
         "mockery/mockery": "^1.4",
         "orchestra/testbench": "^6.14",
         "phpunit/phpunit": "^9.5"