composer: use latest testbench

Author: nerg4l

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
         laravel: [ '^6.10', '^7.0', '^8.0' ]
         dependency-version: [prefer-lowest, prefer-stable]
 
-    name: PHP ${{ matrix.php }} - Laravel ${{ matrix.laravel }}
+    name: PHP ${{ matrix.php }} - Laravel ${{ matrix.laravel }} - ${{ matrix.dependency-version }}
 
     steps:
       - name: Update apt

composer.json

@@ -19,7 +19,7 @@
         "illuminate/http": "^6.10 || ^7.0 || ^8.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^4.0 || ^5.0 || ^6.0",
+        "orchestra/testbench": "^4.17 || ^5.19 || ^6.19",
         "phpunit/phpunit": "^9.3",
         "mockery/mockery": "^1.3"
     },