Updating all Joomla dependencies to 3.x-dev

Author: Hackwar

composer.json

@@ -11,7 +11,7 @@
     },
     "require-dev": {
         "doctrine/inflector": "^1.2",
-        "joomla/test": "^2.0.1",
+        "joomla/test": "3.0.x-dev",
         "phpunit/phpunit": "^8.5|^9.0",
         "squizlabs/php_codesniffer": "~3.7.1"
     },