Update email address of Yitzchak Scott-Thoennes

Author: khwilliamson

.mailmap

@@ -949,6 +949,7 @@ Wolfgang Laun <wolfgang.laun@alcatel.at> <wolfgang.laun@thalesgroup.com>
 Wolfgang Laun <wolfgang.laun@alcatel.at> LAUN Wolfgang <wolfgang.laun@alcatel.at>
 Wolfgang Laun <wolfgang.laun@alcatel.at> wolfgang.laun@chello.at <wolfgang.laun@chello.at>
 YAMASHINA Hio <hio@ymir.co.jp> Hio <hio@hio.jp>
+Yitzchak Scott-Thoennes <sthoenna@efn.org> Yitzchak Scott-Thoennes <sthoenna@gmail.com>
 Yitzchak Scott-Thoennes <sthoenna@efn.org> Yitzchak Scott-Thoennes <ysth@raven.shiftboard.com>
 Yuval Kogman <nothingmuch@woobling.org> nothingmuch@woobling.org <nothingmuch@woobling.org>
 Yuval Kogman <nothingmuch@woobling.org> Yuval Kojman <unknown>