Revert "Update kit & adapter packages"

This reverts commit 7fc9629975.

This is causing an iframe issue on navigation.

svelte.config.js

@@ -26,6 +26,9 @@ const config = {
         return !filepath.endsWith(".test.ts");
       },
     },
+
+    // hydrate the <div id="svelte"> element in src/app.html
+    target: "#svelte",
   },
 };