Added PHP8 compatibility [experimental]

composer.json

@@ -24,7 +24,7 @@
     "barryvdh/laravel-debugbar": "^3.2",
     "doctrine/cache": "^1.10",
     "doctrine/common": "^2.12",
-    "doctrine/dbal": "^2.10",
+    "doctrine/dbal": "^2.12",
     "doctrine/inflector": "^1.3",
     "doctrine/instantiator": "^1.3",
     "eduardokum/laravel-mail-auto-embed": "^1.0",
@@ -108,9 +108,6 @@
     "preferred-install": "dist",
     "sort-packages": true,
     "optimize-autoloader": true,
-    "process-timeout": 3000,
-    "platform": {
-      "php": "7.2.5"
-    }
+    "process-timeout": 3000
   }
 }