chore(deps): 添加 six-shop/lakala 和 sixdec/coupon依赖

composer.json

@@ -29,7 +29,5 @@
       "id": "lakala",
       "class": "SixShop\\Lakala\\Extension"
     }
-  },
-  "minimum-stability": "dev",
-  "prefer-stable": true
+  }
 }