build(deps): 更新 six-shop/core 依赖版本

- 将 six-shop/core 的最低版本要求从 ^v0.3 修改为 ^v0.4

composer.json

@@ -8,7 +8,7 @@
   ],
   "require": {
     "php": ">=8.3",
-    "six-shop/core": "^v0.3"
+    "six-shop/core": "^v0.4"
   },
   "authors": [
     {