feat: add unresgiser old sw

src/components/Head.astro

@@ -52,4 +52,17 @@ const baseURL = "https://ayo.ayco.io";
       </script>
     )
   }
+  <script>
+    /**
+     * unregister existing service workers
+     */
+    navigator.serviceWorker.getRegistrations()
+      .then(
+        (registrations) => {
+          for(let registration of registrations) {
+            registration.unregister();
+          }
+        }
+      ); 
+  </script>
 </head>