fix: cache generated schema outputs

Author: os-zhuang

turbo.json

@@ -4,7 +4,7 @@
   "tasks": {
     "build": {
       "dependsOn": ["^build"],
-      "outputs": ["dist/**", ".next/**", "!.next/cache/**"]
+      "outputs": ["dist/**", "json-schema/**", ".next/**", "!.next/cache/**"]
     },
     "test": {
       "dependsOn": ["^build"],