Add alias for yizeng in .mailmap and update AUTHORS

Signed-off-by: Andreas Tolfsen <ato@mozilla.com>

Author: yizeng

.mailmap

@@ -35,3 +35,4 @@ Seva Lotoshnikov <sevalo@google.com> <vlotoshnikov@gmail.com>
 Simon Stewart <simon.m.stewart@gmail.com> <simons@fb.com>
 Simon Stewart <simon.m.stewart@gmail.com> Simon M Stewart
 Stuart Knightly <stuidge@gmail.com>
+Yi Zeng <yi.zeng.dev@gmail.com> Yi Zeng <yi.zeng.nz@gmail.com>

AUTHORS

@@ -143,6 +143,6 @@ Vincent Ladeuil <vila+github@canonical.com>
 Vyvyan Codd
 WORKSTATION02 <clz.livio@gmail.com>
 wpc <wpc@example.com>
-Yi Zeng <yi.zeng.nz@gmail.com>
+Yi Zeng <yi.zeng.dev@gmail.com>
 Zoltar - Knower of All
 zsong <zsong@example.com>