Downgrade phpunit

Author: palPalani

composer.json

@@ -25,7 +25,7 @@
     },
     "require-dev": {
         "orchestra/testbench": "^6.9",
-        "phpunit/phpunit": "^9.5",
+        "phpunit/phpunit": "~9.3",
         "vimeo/psalm": "^4.4"
     },
     "autoload": {