fix: add sleep to show update errors before reboot

gate.lua

@@ -168,6 +168,10 @@ local function checkAndApplyUpdate()
   isUpdating = false
   pcall(drawReadyScreen)
   
+  if lastUpdateError then
+    sleep(3)
+  end
+
   -- Reboot
   os.reboot()
 end

ticketmachine.lua

@@ -750,6 +750,10 @@ local function checkAndApplyUpdate()
   isUpdating = false
   pcall(drawVersionIndicator)
   
+  if lastUpdateError then
+    sleep(3)
+  end
+
   os.reboot()
 end