feat(composer): allow php ^7.2.5

composer.json

@@ -19,7 +19,7 @@
     "source": "https://git.defis.info/SeaCMS/seacms-auth"
   },
   "require": {
-    "php": "^8.0",
+    "php": "^7.2.5||^8.0",
     "seacms/seacms-api": "dev-master"
   },
   "autoload": {
@@ -28,7 +28,7 @@
   "config": {
     "optimize-autoloader": true,
     "platform": {
-        "php": "8.0.0"
+        "php": "7.2.5"
     },
     "platform-check": true,
     "sort-packages": true