Update composer.json

Co-Authored-By: atymic <[email protected]>

Author: Alymosul

composer.json

@@ -18,7 +18,7 @@
     "require-dev": {
         "mockery/mockery": "^0.9.5",
         "phpunit/phpunit": "~5.4||~5.7||~6.0||^7.0",
-        "orchestra/testbench": "~3.3||~3.4||~3.5||~3.6||~3.7"
+        "orchestra/testbench": "~3.3||~4.0"
     },
     "autoload": {
         "psr-4": {