drop support for php 7.2

Author: melihovv

composer.json

@@ -16,7 +16,7 @@
     }
   ],
   "require": {
-    "php": ">=7.2",
+    "php": ">=7.3",
     "illuminate/config": "^6.0|^7.0|^8.0",
     "illuminate/console": "^6.0|^7.0|^8.0",
     "illuminate/support": "^6.0|^7.0|^8.0",