mailmap: Add entry for Jai soni.
mailmap: Add entry for Jai soni.

Based on the non-noreply.github.com email address, and the name
found on their chat.zulip.org profile.

zulip/zulip,zulip/zulip,rht/zulip,kou/zulip,kou/zulip,andersk/zulip,andersk/zulip,rht/zulip,rht/zulip,kou/zulip,andersk/zulip,andersk/zulip,zulip/zulip,rht/zulip,andersk/zulip,kou/zulip,zulip/zulip,rht/zulip,zulip/zulip,zulip/zulip,andersk/zulip,kou/zulip,kou/zulip,rht/zulip,zulip/zulip,andersk/zulip,kou/zulip,rht/zulip