Added vimeo/psalm back

Author: palPalani

composer.json

@@ -25,7 +25,8 @@
     },
     "require-dev": {
         "orchestra/testbench": "^6.0",
-        "phpunit/phpunit": "^9.3"
+        "phpunit/phpunit": "^9.3",
+        "vimeo/psalm": "^4.3"
     },
     "autoload": {
         "psr-4": {