refactor: use global setting for Vercel Edge runtime

apps/website/svelte.config.js

@@ -1,5 +1,5 @@
 import preprocess from 'svelte-preprocess'
-import adapter from '@sveltejs/adapter-auto'
+import adapter from '@sveltejs/adapter-vercel'
 import { fileURLToPath } from 'url'
 import { dirname } from 'path'
 
@@ -17,7 +17,9 @@ const config = {
     }),
 
     kit: {
-        adapter: adapter(),
+        adapter: adapter({
+            runtime: 'edge',
+        }),
         alias: {
             $components: 'src/components',
             $animations: 'src/animations',