Prepare for testbed deployment: update ndncert-client

Change-Id: I0a84e2ebb913166b5fbdb16fdc0938862ba42a22
diff --git a/AUTHORS.md b/AUTHORS.md
index 72c3674..5201251 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -11,6 +11,7 @@
 * Davide Pesavento <https://github.com/Pesa>
 * Md Ashiqur Rahman <https://ashiqrahman.com>
 * Junxiao Shi <https://cs.arizona.edu/~shijunxiao>
+* Tianyuan Yu <https://www.tianyuan-yu.com>
 * Yufeng Zhang <https://yufengzh.io>
 * Zhiyi Zhang <https://zhiyi-zhang.com>