refactor: increased max request size for /api/settings

src/PortalTask.h

@@ -413,7 +413,7 @@ protected:
         this->webServer->send(406);
         return;
 
-      } else if (plain.length() > 2048) {
+      } else if (plain.length() > 2536) {
         this->webServer->send(413);
         return;
       }