chore(deps): upgrade to nextjs 16 (#2203)

* chore(deps): upgrade to nextjs 16

* upgraded fumadocs

* ensure vercel uses bun

* fix build

* fix bui;d

* remove redundant vercel.json

apps/docs/tsconfig.json

@@ -13,10 +13,10 @@
     "moduleResolution": "bundler",
     "resolveJsonModule": true,
     "isolatedModules": true,
-    "jsx": "preserve",
+    "jsx": "react-jsx",
     "incremental": true,
     "paths": {
-      "@/.source": ["./.source/index.ts"],
+      "@/.source/*": ["./.source/*"],
       "@/*": ["./*"]
     },
     "plugins": [
@@ -31,7 +31,8 @@
     "**/*.tsx",
     ".next/types/**/*.ts",
     "content/docs/execution/index.mdx",
-    "content/docs/connections/index.mdx"
+    "content/docs/connections/index.mdx",
+    ".next/dev/types/**/*.ts"
   ],
   "exclude": ["node_modules"]
 }