Update testing dependencies to match Laravel 9

Author: LukeTowers

composer.json

@@ -38,9 +38,9 @@
         "wikimedia/composer-merge-plugin": "~2.0.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "^8.4|^9.3.3",
-        "mockery/mockery": "~1.3.3|^1.4.2",
-        "fakerphp/faker": "~1.9",
+        "phpunit/phpunit": "^9.5.8",
+        "mockery/mockery": "^1.4.4",
+        "fakerphp/faker": "^1.9.2",
         "squizlabs/php_codesniffer": "3.*",
         "php-parallel-lint/php-parallel-lint": "^1.0",
         "dms/phpunit-arraysubset-asserts": "^0.1.0|^0.2.1"