chore(package): update gulp-sourcemaps to version 2.2.2
chore(package): update gulp-sourcemaps to version 2.2.2

https://greenkeeper.io/

flodolo/testpilot,flodolo/testpilot,mozilla/idea-town,mozilla/idea-town-server,flodolo/testpilot,6a68/testpilot,meandavejustice/testpilot,lmorchard/idea-town-server,lmorchard/idea-town,meandavejustice/testpilot,mozilla/idea-town,lmorchard/testpilot,mathjazz/testpilot,6a68/idea-town,dannycoates/testpilot,mozilla/idea-town-server,mozilla/idea-town,lmorchard/testpilot,chuckharmston/testpilot,chuckharmston/testpilot,meandavejustice/testpilot,6a68/testpilot,6a68/testpilot,chuckharmston/testpilot,lmorchard/idea-town-server,dannycoates/testpilot,dannycoates/testpilot,mathjazz/testpilot,6a68/idea-town,6a68/testpilot,lmorchard/idea-town,meandavejustice/testpilot,fzzzy/testpilot,mozilla/idea-town-server,lmorchard/idea-town-server,fzzzy/testpilot,flodolo/testpilot,mathjazz/testpilot,lmorchard/testpilot,6a68/idea-town,lmorchard/idea-town-server,chuckharmston/testpilot,dannycoates/testpilot,mozilla/idea-town,fzzzy/testpilot,mathjazz/testpilot,lmorchard/testpilot,fzzzy/testpilot,lmorchard/idea-town,lmorchard/idea-town,6a68/idea-town,mozilla/idea-town-server