Update the testbench

Author: hisorange

composer.json

@@ -38,7 +38,7 @@
   },
   "require-dev": {
     "phpunit/phpunit": "~5.0 || ~6.0 || ~7.0 || ~8.0 || ~9.0",
-    "orchestra/testbench": "~4.0 || ~5.0 || ~6.0",
+    "orchestra/testbench": "~4.0 || ~5.0 || ~6.0 || ~7.0",
     "php-coveralls/php-coveralls": "~1.0 || ~2.0",
     "squizlabs/php_codesniffer": "^3.5",
     "phpstan/phpstan": "^0.12.11"