Test smaller dynos (#18371)

Co-authored-by: chiedo <chiedo@users.noreply.github.com>

Author: chiedo

app.json

@@ -12,7 +12,7 @@
   "formation": {
     "web": {
       "quantity": 1,
-      "size": "standard-2x"
+      "size": "standard-1x"
     }
   }
 }