chore: change dependency location from require to require-dev.

Author: Konstantin Lapkovsky

composer.json

@@ -14,7 +14,6 @@
     "laravel/framework": ">=5.7.0",
     "ronasit/laravel-helpers": ">=2.5",
     "laravel/legacy-factories": ">=1.3.0",
-    "orchestra/testbench": "^6.25",
     "ext-json": "*"
   },
   "require-dev": {
@@ -23,7 +22,8 @@
     "mockery/mockery": "^1.4",
     "phpunit/phpunit": "^8.0",
     "mikey179/vfsstream": "^1.6.11",
-    "php-mock/php-mock": "^2.4.1"
+    "php-mock/php-mock": "^2.4.1",
+    "orchestra/testbench": "^6.25"
   },
   "autoload": {
     "psr-4": {