🐛 #1332 微信卡券修复签名生成错误的问题

微信卡券签名生成错误
https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/JS-SDK.html#65
签名说明#1
参数字符串的应先按照字典序排序,再进行sha1加密

weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/impl/WxMpCardServiceImpl.java

@@ -81,6 +81,7 @@ public class WxMpCardServiceImpl implements WxMpCardService {
     signParams[optionalSignParam.length + 1] = nonceStr;
     signParams[optionalSignParam.length + 2] = cardApiTicket;
     StringBuilder sb = new StringBuilder();
+    Arrays.sort(signParams);
     for (String a : signParams) {
       sb.append(a);
     }