9.4.3 requires php>=7.3, but we support 7.2 even in dev...

Author: UmanShahzad

composer.json

@@ -28,7 +28,7 @@
         "ext-json": "*"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.4.3",
+        "phpunit/phpunit": "~9",
         "squizlabs/php_codesniffer": "^3.5.8"
     },
     "autoload": {