feat(blog): use nextjs rewrite instead of vercel's

apps/blog/next.config.js

@@ -1,5 +1,14 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
+    // https://umami.is/docs/guides/bypass-ad-blockers#proxying
+    async rewrites() {
+        return [
+            {
+                source: "/stats/:match*",
+                destination: "https://analytics.umami.is/:match*",
+            },
+        ]
+    },
     experimental: {
         externalDir: true,
     },

apps/blog/vercel.json

@@ -1,9 +0,0 @@
-{
-    "$schema": "https://openapi.vercel.sh/vercel.json",
-    "rewrites": [
-        {
-            "source": "/stats/:match*",
-            "destination": "https://analytics.umami.is/:match*"
-        }
-    ]
-}