fix: swap Astro adapter from node to vercel for deployment

astro.config.mjs

@@ -4,7 +4,7 @@ import { defineConfig } from 'astro/config';
 import react from '@astrojs/react';
 import tailwindcss from '@tailwindcss/vite';
 
-import node from '@astrojs/node';
+import vercel from '@astrojs/vercel';
 
 // https://astro.build/config
 export default defineConfig({
@@ -15,7 +15,5 @@ export default defineConfig({
     plugins: [tailwindcss()]
   },
 
-  adapter: node({
-    mode: 'standalone'
-  })
+  adapter: vercel()
 });