feat: add last updated timestamp to WeatherData component

frontend/src/components/WeatherData.tsx

@@ -1,5 +1,6 @@
 import React from "react";
 import { Sunrise, Sunset } from "lucide-react";
+import { getDateTime } from "../utils/utils";
 
 const WeatherData: React.FC = () => {
   const weatherRaw = localStorage.getItem("weather");
@@ -75,6 +76,11 @@ const WeatherData: React.FC = () => {
                 : "--:--"}
             </span>
           </div>
+          <div className="flex items-center gap-3">
+            <span className="text-base text-gray-600 italic font-semibold">
+              Last updated: {getDateTime()}
+            </span>
+          </div>
         </div>
       </div>
     </div>