refactor(pay): 重构 FiuuReturnController 中的 skey 计算逻辑

KKSU

2025-02-08 b116b2b304a6aff67a41e9fdcb89967afef194f8

 src/main/java/cc/mrbird/febs/pay/properties/AliPayProperties.java

@@ -21,4 +21,6 @@
    private String privateKey;

    private String noticeUrl;

    private String domain;
}