Update webmock dependency to version 1.8.9
Update webmock dependency to version 1.8.9

jasnow/follow-all,codeforamerica/follow-all,codeforamerica/follow-all,jasnow/follow-all,codeforamerica/follow-all,BryanH/follow-all,BryanH/follow-all,BryanH/follow-all,jasnow/follow-all